Hi All,

I have some Maths Questions for you all to have a look at.

Please answer - I am giving 20 points!

I will mark Brainliest as well.

Take care,

Jake

Answer:

x = -6.

Step-by-step explanation:

5 -2x = -4x - 7

Add '4x' to both sides:

5 - 2x + 4x + -4x + 4x -7

5 + 2x = -7

Subtract '5' from both sides:

5 - 5 + 2x = -7 - 5

2x = -12

Divide both sides by '2':

x = -6.

[tex]3\sqrt{6} = \sqrt{9}*\sqrt{6} = \sqrt{9*6} = \sqrt{54}[/tex]

The rule I'm using is

[tex]\sqrt{x}*\sqrt{y} = \sqrt{x*y}[/tex]

note how I rewrote "3" into the square root of 9, so that everything would have a square root over it, and that allows me to use that rule above.

[tex]\sqrt{54}[/tex] equivalent to the expression [tex]3\sqrt{6}[/tex].

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.

Given expression

[tex]3\sqrt{6}[/tex]

We have the property [tex]\sqrt{x}[/tex] × [tex]\sqrt{y}[/tex] = [tex]\sqrt{x.(y)}[/tex]

[tex]3\sqrt{6}[/tex]

= [tex]\sqrt{9}[/tex] × [tex]\sqrt{6}[/tex]

= [tex]\sqrt{9.(6)}[/tex]

= [tex]\sqrt{54}[/tex]

[tex]\sqrt{54}[/tex] equivalent to the expression [tex]3\sqrt{6}[/tex].

Find out more information about expression here

https://brainly.com/question/14961928

#SPJ3

Answer:

I believe x is the angle shown. I hope this helps

Answer:

x = 36 and √x = 6; total 42 children

Step-by-step explanation:

Number of boys:  x

Number of girls:  √x

Total number of kids:  x + √x = 42.

Find x.

Rewrite x + √x = 42 as √x = 42 - x.  Then square both sides:

x = 1764 - 84x + x^2, or

x^2 - 85x + 1764 = 0

Check out Answer C:  x = 36.  Is the above equation true for x = 36?  YES

Check out Answer A:  x = 49.  Is the above equation true for x = 49?  YES

Assume that x = 36.  This would be the number of boys.  The number of girls would be √36, or 6.  Does the sum of 36 and 6 equal 42?  YES.  So the number of boys is 36 and the number of girls is 6.

Assume that x = 49.  This would be the number of boys.  The number of girls would be √49, or 8.  Does the sum of 49 and 7 equal 42?  NO.  So we reject x = 49 as the number of boys and accept x = 36 as being correct.

Answer:

Correct option: first one.

Step-by-step explanation:

Let's analyse each option:

1)

When f = 0, |0 + 3| < 9, which is true because 3 is less than 9.

This statement is true, and the value f = 0 in inside the solution graphed by Sarah.

2)

When f = -12, |-12 + 3| < 9, which is true because 9 is equal to 9.

This statement is false, because the inequality uses a "less-than" symbol and not a "equal" symbol, so 9 < 9  is false

3)

When f = 10, |10 + 3| < 9, which is true because 9 is greater than 13.

This statement is false, because 9 is not greater than 13.

4)

When f = -14, |-14 + 3| < 9, which is true because 9 is greater than –11.

This statement is false, because the value of |-14 + 3| is 11 and not -11.

So the correct option is the first one.

Answer:

Answer is A,

Step-by-step explanation:

edge2020

Answer:

4

Step-by-step explanation:

The right answer is 4.

look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

i believe the answer is D (which is 10)

Step-by-step explanation:

i just took the test. so you have to isolate X, so you add 2 to both sides and on the right you get answer of "5". so then you have to multiply both sides by "2/1" (which is the reciprocal of 1/2) and so on the left side so you're left with just "x", and on the right side you have 2/1 times 5/1 which equals "10".

Answer:

Step-by-step explanation:

G(x) is transformed from the parent function f(x)=x^2 by:

right 4 units

since we all know that the vertex form of a quadratic equation is y=a(x-h)^2+k

since 4 is h, and k is 0 ( graph is on the x-axis), we can write the equation of this graph:

g(x)=(x-4)^2, which is C

Answer:

26

Step-by-step explanation:

lol

Answer:

AC = 26

Step-by-step explanation:

AB + BC = AC

18+ 8 = AC

26

Answer:

I'm pretty sure it means it is any number

Answer:

It means there is no beginng point or end point.

Answer:

b) 9 units

Step-by-step explanation:

segment ab is the same length as segment bc

Answer:

27.5

Step-by-step explanation:

this is the trigonometric ratio.. we are looking for d... that is the opposite... any side facing the angel is the opposite.... so the longest side of the right angle triangle is the hypotenuse........ so you are looking for the opposite and you are giving the hypotenuse.... so the easiest way to know how to find it is by using this way...... SOH CAH TOA..... the first words stand for sin cosine and tangent of angles.... we are using sin.... because it says opposite / hypotenuse... and as you can see the angle which is 39 degree we will use sin 39.....what will be sin 39=d/30m....then ull cross multiply.... d=30m* sin 39.....

d = 30m *0.963

d = 28.8

but since 27.5 is dere....

you can round up to 1 sig. f =28

Answer:

B. 1.67%

Step-by-step explanation:

The periodic rate is the annual interest rate divided by the number of periods.

Therefore, we divide the annual interest rate by 12.

[tex]20\% \div 12 =1.67\% $(correct to two decimal places)[/tex]

Therefore, the periodic interest rate for Jack's credit card from June 3

to July 2 is 1.67%.

Answer:

18.75 or 18 3/4

Step-by-step explanation:

assuming 5 cups is for 1 batch we can just multiply 5 and 3 3/4 to get our answer.

Answer:

The value of b is -3 and m is 0.

Step-by-step explanation:

You have to substitute the coordinates into both equation in order to find m and b value :

Find m,

[tex]y = mx + 3[/tex]

At (2,3),

[tex]3 = m(2) + 3[/tex]

[tex]3 - 3 = 2m[/tex]

[tex]2m = 0[/tex]

[tex]m = 0[/tex]

Find b,

[tex]y = 3x + b[/tex]

At (2,3),

[tex]3 = 3(2) + b[/tex]

[tex]b + 6 = 3[/tex]

[tex]b = 3 - 6[/tex]

[tex]b = - 3[/tex]

Answer:

b = -3

m = 0

Step-by-step explanation:

y=mx+b

3 is the constant

Answer:

[tex]tanC=\frac{c}{b},[/tex] [tex]sinB=\frac{b}{a},[/tex] [tex]tanB=\frac{b}{c},[/tex] and [tex]cosB =\frac{c}{a}[/tex]

Step-by-step explanation:

We can use the phrase SOH-CAH-TOA to help us with this problem. SOH-CAH-TOA stands for Sine = Opposite / Hypotenuse, Cosine = Adjacent / Hypotenuse, and Tangent = Opposite / Adjacent. This phrase helps to remember which sides of a right triangle get divided by which.

First, we'll evaluate [tex]cosB[/tex]. Referencing CAH (Cosine = Adjacent / Hypotenuse), we know that [tex]cosB[/tex] is equal to the length of the adjacent leg to ∠B, which is c, divided by the length of the hypotenuse of the right triangle, which is a. Therefore, [tex]cosB =\frac{c}{a}[/tex].

As for [tex]tanC[/tex], we can refer to TOA (Tangent = Opposite / Adjacent), which means that [tex]tanC[/tex] is equal to the length of the opposite leg to ∠C, which is c, divided by the length of the adjacent leg to ∠C, which is b. Therefore, [tex]tanC=\frac{c}{b}[/tex].

As for [tex]sinB[/tex], we can refer to SOH (Sine = Opposite / Hypotenuse), which means that [tex]sinB[/tex] is equal to the length of the opposite leg to ∠B, which is b, divided by the length of the hypotenuse of the right triangle, which is a. Therefore, [tex]sinB=\frac{b}{a}[/tex].

Finally, we'll evaluate [tex]tanB[/tex]. As TOA tells us, [tex]tanB[/tex] is equal to the length of the opposite leg to ∠B, which is b, divided by the adjacent leg to ∠B, which is c. Therefore, [tex]tanB=\frac{b}{c}[/tex].

Hope this helps!

Answer:

8

Step-by-step explanation:

because we know its an isosceles triangle angle A and C will both be the same and since we know A = 69 C will also be 69. we also know that angles in a triangle add to 180 so take away the two 69s from the 180 to get 42

then we work backwards if its 5x + 2 then we need to do 5x - 2 to get 40 then divide it by 5 to get your answer 8!

(sorry if the explanation doesnt make sense )

9514 1404 393

Answer:

  D.  16.8 years

Step-by-step explanation:

The multiplier each year is 1-3% = 0.97, so the multiplier after x years is 0.97^x. You want to know the value of x when that multiplier is 60%, or 0.60.

  0.97^x = 0.60

  x·log(0.97) = log(0.60) . . . . . . take logarithms

  x = log(0.60)/log(0.97) ≈ 16.8

At the given rate, it will be 16.8 years before 60% of the species remains.

The length of AB is 10 units.

look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

|-0.073| < |0.73|​

Step-by-step explanation:

since it is absolute value |-0.073| = .073

and |0.73|​= .73

|-0.073|  |0.73|​

Hello! The answer to your question is:

I believe it is 0.073 < 0.73

I hope this helped you!

Answer: it’s (3,2)

Step-by-step explanation:

Answer:

2/3

Step-by-step explanation:

6 friends share 4 pizzas, each get 4/6 = 2/3 pizza

Answer:

65 points in all

Step-by-step explanation:

3 x 3 = 9

7 x 8 = 56

56 + 9 = 65

:))

The right answer is 2√6

look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

0.625

Step-by-step explanation:

5/8 is the same as dividing so divide them both and it will equal 0.625

Answer:

0.625

Step-by-step explanation:

1/8 = 0.125

0.125 times 55 = 0.625

Answer:

19%

Step-by-step explanation:

1. Decrease by 10% = 0.9 times

2. Repeat decrease by 10% = 0.9*0.9= 0.81 times

0.81 times decrease equals to 100%-81%= 19% decrease

Answer:

the first and last option.

Step-by-step explanation:

the equation will be equal to 288.

x is the amount of one payment that he makes 3 times, hence the 3x.

15 is his initial payment so that is added to the 3x to equal 288.

the second equation still equals to 288.

the 15 is still there because added to the phone price it is equal to 288.

the x represents the price of the phones and 3 is how many he's getting, hence the 3x.

Answer:

the equation will be equal to 288.

x is the amount of one payment that he makes 3 times, hence the 3x.

15 is his initial payment so that is added to the 3x to equal 288.

the second equation still equals to 288.

the 15 is still there because added to the phone price it is equal to 288.

the x represents the price of the phones and 3 is how many he's getting, hence the 3x.

Step-by-step explanation:

Mark me brainiest please

Answer:

30%

Step-by-step explanation:

18 / 60 = .3 * 100 = 30%

Answer:

The percent of the the corn seeds is 30%.

Step-by-step explanation:

Because when you calculate 60% and 18% will get a percent 30%.

Solution for 18 is what percent of 60:

18:60*100 =

( 18*100):60 =

1800:60 = 30

Now we have: 18 is what percent of 60 = 30

Question: 18 is what percent of 60?

Percentage solution with steps:

Step 1: We make the assumption that 60 is 100% since it is our output value.

Step 2: We next represent the value we seek with $x$.

Step 3: From step 1, it follows that $100\%=60$.

Step 4: In the same vein, $x\%=18$.

Step 5: This gives us a pair of simple equations:

$100\%=60(1)$.

$x\%=18(2)$.

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

$\frac{100\%}{x\%}=\frac{60}{18}$

Step 7: Taking the inverse (or reciprocal) of both sides yields

$\frac{x\%}{100\%}=\frac{18}{60}$

$\Rightarrow x=30\%$

Therefore, $18$ is $30\%$ of $60$.

Hope this helps :D and can i get brainlest plz

Answer:

x = 36.

Step-by-step explanation:

I have attached the work to your problem.

Please see the attachment below.

I hope this helps!