Hey guys, I need help with this algebra assignment. Any answers will help! I’d be happy to give you brainliest for whoever helps me. Also please show your work, Problems are in the pictures :)

Answer:

Step-by-step explanation:

Both of them are wrong the answer would be -49.

Answer:

Marcus is correct. Jeremy squared -5 instead of 5. The negative is not within parentheses, so it is not squared.

Step-by-step explanation:

The solution of the system of equations will be (2, 8).

What is substitution method?

To find the value of any one of the variables from one equation in terms of the other variable is called the substitution method.

Given that;

The system of equations are,

y = 4x

And, y = 3x + 2

Now,

Solve the linear equations as;

The system of equations are,

y = 4x      .... (i)

y = 3x + 2   .. (ii)

Substitute y = 4x in equation (ii) as;

y = 3x + 2

4x = 3x + 2

4x - 3x = 2

x = 2

And, y = 4x

y = 4 × 2

y = 8

Thus, The solution of the system of equations will be (2, 8).

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Answer:

Step-by-step explanation:

4y=5x+7

Answer:

Sounds like a good idea

Step-by-step explanation:

(mark this branliest if you do)

Answer:

YES

Step-by-step explanation:

Its so fun

Answer: B. Outdoor temperature as a function of time

Step-by-step explanation:

just answered edge2020

Answer: There would be a crown on the top right side of their comment

Answer:

x = - 10, x = 9

Step-by-step explanation:

Given

x² + x - 90 = 0 ( add 90 to both sides )

x² + x = 90

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2([tex]\frac{1}{2}[/tex] )x + [tex]\frac{1}{4}[/tex] = 90 + [tex]\frac{1}{4}[/tex]

(x + [tex]\frac{1}{2}[/tex] )² = [tex]\frac{361}{4}[/tex] ( take the square root of both sides )

x + [tex]\frac{1}{2}[/tex] = ± [tex]\sqrt{\frac{361}{4} }[/tex] = ± [tex]\frac{19}{2}[/tex] ( subtract [tex]\frac{1}{2}[/tex] from both sides )

x = - [tex]\frac{1}{2}[/tex] ± [tex]\frac{19}{2}[/tex] , thus

x = - [tex]\frac{1}{2}[/tex] - [tex]\frac{19}{2}[/tex] = [tex]\frac{-20}{2}[/tex] = - 10

x = - [tex]\frac{1}{2}[/tex] + [tex]\frac{19}{2}[/tex] = [tex]\frac{18}{2}[/tex] = 9

Answer:

A. 60√6

Step-by-step explanation:

√10 * √ 15 = √ 150

√ 150 = 5√ 6

4 * 3 = 12

12 * 5 = 60

The answer is 60√ 6

Answer:

0.67894

Step-by-step explanation:

Given that :

Lifespan of zebra is normally distributed :

Mean(μ) = 20.5

Standard deviation (σ) = 3.93

Probability of Zebra living between 16. 6 to 24.4 years

Using the empirical rule :

Z = (x - μ) / σ

For : P(Z < x ) ; X = 16.6

Z = (16.6 - 20.5) / 3.93

Z = - 0.9923

P(Z < - 0.9923) = 0.16053

For : P(Z < X) ; X = 24.4

Z = (24.4 - 20.5) / 3.93

Z = 0.9923

P(Z < 0.9923) = 0.83947

Hence,

0.83947 - 0.16053 = 0.67894

Answer:

68%

Step-by-step explanation:

Answer:

95%

Step-by-step explanation:

Data falls within 2 standard deviations from the mean - is calculated using;

μ – 2σ and μ + 2σ .

The mean of this distribution is $25,615 and the standard deviation is $25,333.

μ – 2σ

= $25,615 - 2($25,333)

=$-25051

μ + 2σ

= $25,615 + 2($25,333)

= 76,281

Empirical rule states that: 95% of data falls within 2 standard deviations from the mean

Hence, 95% the sample had total personal incomes within two standard deviations of the mean.

Answer:

Your answer would be D

Step-by-step explanation:

first make 2/5 and 1/20 into ?/100

figure out how many times 5 goes into 100 than multiply 2 by that answer.

40/100=40:?

then do the same to 1/20

5/100= ?:5

So 40:5

Answer:

4:12

Step-by-step explanation:

he hit the bat 4 : out of 12 times

4:12

Answer:

The answer would be 54

Step-by-step explanation:

Answer: -16/3

Step-by-step explanation:

-2 (8/3)

(-2/1)(8/3)

((-2)(8))=-16

1(3)=3

-16/3

Answer:

-2 x 8/3 = -16/3

Step-by-step explanation:

When multiplying fractions, you multiply the numerators (numbers above the fraction line) and the denominators (numbers below the fraction line) with each other. If one of the numbers is not visibly a fraction, remember that all numbers are actually fractions - you must simply write in the denominator of 1. In this case, you'd write [tex]-\frac{2}{1} * \frac{8}{3}[/tex], which would then give you the result of [tex]-\frac{16}{3}[/tex] (-2 x 8 = -16, 1 x 3 = 3).

Hope this helped!

bonus fun fact: the fraction line is called the vinculum.

Answer:

yes

Step-by-step explanation:

from (0,5) to (1,0), it is decreasing

Answer:

6.25

Step-by-step explanation:

Divide 150 $ to 24 caps on your calculator

If the cost of 24 caps is $150, then the cost of each cap is $6.25.

We know that a single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method. We typically use this technique for math calculations. We are able to locate the missing value using the unitary method.

Given that the cost of 24 caps is $150.

Then the cost of 1 cap is 150/24 = $6.25

Therefore we can conclude that If the cost of 24 caps is $150, then the cost of each cap is $6.25.

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Answer:

C

Step-by-step explanation:

hope this helps

BRAILIEST? PWEASE

Answer:

She spent [tex]5\frac{5}{24} days[/tex] on her English paper and math test combined than on her science project

Step-by-step explanation:

Suzy spent time on English paper =[tex]6\frac{7}{8}=\frac{55}{8}[/tex]

She spent time on science project = [tex]3\frac{1}{6}=\frac{19}{6}[/tex]

She spent on Maths test =[tex]1\frac{1}{2}=\frac{3}{2}[/tex]

She spent on her English paper and math test combined =[tex]\frac{55}{8}+\frac{3}{2}=\frac{67}{8}[/tex]

Suzy spend time more on her English paper and math test combined than on her science project = [tex]\frac{67}{8}-\frac{19}{6}=5\frac{5}{24}[/tex]

Hence She spent [tex]5\frac{5}{24} days[/tex] on her English paper and math test combined than on her science project

Answer:

Step-by-step explanation:

1/2 ÷ 3/2

Copy dot flip

1/2 * 2/3

Rewriting

1/3 * 2/2

1/3 * 1

1/3

Answer:

0.33333333333

Step-by-step explanation:

Answer:

12 months

Step-by-step explanation:

if the amount of money rob makes a month is $420 and the amount he spends a month is $360 then subtract the two. if you do this you should get 60 and the you find 60 times what = $720

Step-by-step explanation:

[tex] \frac{6}{22} \times 100 \\ \\ \frac{3}{11} \times 100 \\ = 27.3[/tex]

Answer:

23%

Step-by-step explanation:

also just divide the numerator by the denominator

hope this help u :)

Answer:

Step-by-step explanation:

Point-slope form:

The standard point-slope form equation is

[tex]y-y_1=m(x-x_1)[/tex]

where [tex](x_1,y_1)[/tex] are the coordinates and [tex]m[/tex] is the slope/gradient

so for point-slope form we need to find m cause we already have 2 coordinates (-3,5) , (3,3) we can use any one of them in our equation but first we need to find the slope by the formula

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

we use our coordinates to find it and simply plug in the values

[tex]m=\frac{3-5}{3-(-3)} \\m=\frac{-2}{6} \\\\m=\frac{-1}{3}[/tex]

so we get our slope m = -1/3

and simply put m and any one of the coordinates into the standard form

[tex]y-y_1=m(x-x_1)\\y-3=\frac{-1}{3} (x-3)\\3(y-3)=-1(x-3)\\3y-9=-x+3\\3y=-x+12\\y=\frac{-x+12}{3} \\y=\frac{-x}{3} +4[/tex]

Slope-intercept form:

The standard slope-intercept form is

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

where m is the slope and c is the y-intercept, we already know the slope is -1/3 from the previous steps but we don't know the y-intercept so lets get started.

y-intercept means the equation intersects the y-axis which means the coordinate should be [tex](0,y)[/tex] so we plug in the slope -1/3 and the coordinate given above (-3,5) , (3,3) in the equation to find the y-intercept that is c. We can you use any one of the two coordinates.

[tex]y=mx+c\\3=\frac{-1}{3}(3)+c \\\\3=\frac{-3}{3} +c\\\\3=-1+c\\c=4[/tex]

so now we found the value of c=4 which is the y-intercept (0,4) and finally our slope-intercept form would be

[tex]y=\frac{-x}{3} +4[/tex]

as both form are same but the approach is different this verifies that both our answers are correct.

The slope of the line is -1/3. The equation in the slope-intercept form is y = (-1/3) x + 4.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that,

The line passes through points (-3,5), and (3,3).

The slope of the line is,

m = (y₂-y₁) / (x₂-x₁)

m = (3-5) / (3-(-3)

m = -2 / 6

m = -1 / 3

The standard equation for the line is,

y - y₁ = m (x - x₁)

y - 5 = -1 / 3 (x - (-3)

3(y - 5) = -1(x+3)

3y - 15 = -x -3

x + 3y = -3 +15

x + 3y = 12

3y = -x +12

y = (-1/3) x + 4

Thus, the slope of the line is -1/3. The equation in the slope-intercept form is y = (-1/3) x + 4.

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Answer:

Step-by-step explanation:

Answer is B

Answer:

x= 10

Step-by-step explanation:

hope i help youuuuu :)