Plz help Jessica received scores of 86, 88, 92, and 90 on her first four tests in
math class. What is Jessica's average score on the four tests?

Answer:

x=3

x=−3

Step-by-step explanation:

2x^2 - 5 = 13

Subtract 13 from both sides.

2x^2 - 5 - 13 = 0

Subtract 13 from −5 to get −18.

2x^2 - 18 = 0

Divide both sides by 2.

x^2 - 9 = 0

Consider x^2−9. Rewrite x^2−9 as x^2−3^2. The difference of squares can be factored using the rule: a^2−b^2=(a−b)(a+b).

(x−3)(x+3)=0

To find equation solutions, solve x−3=0 and x+3=0.

x=3

x=−3

Answer:

this is just a hint

Step-by-step explanation:

the question measures 6.EE.7 because it asks the student to solve a real-world problem by writing an equation of the form px=qpx=qpx=q for a case in which p,qp,qp,q and x are all non-negative rational numbers. In this case the equation includes a division expression and shows the total cost of $13.50\$ 13.50$13.50 divided by 666, the number of spiral notebooks.

Answer:

d

Step-by-step explanation:

The value of the modulus function is y = | x | - k , and as x increases , the value of y decreases and then increases

Regardless of the sign, a modulus function returns the magnitude of a number. The absolute value function is another name for it.

It always gives a non-negative value of any number or variable. Modulus function is denoted as y = |x| or f(x) = |x|, where f: R → (0,∞) and x ∈ R.

The value of the modulus function is always non-negative. If f(x) is a modulus function , then we have:

If x is positive, then f(x) = x

If x = 0, then f(x) = 0

If x < 0, then f(x) = -x

Given data ,

Let the modulus function be represented as A

Now , the value of A is

y = | x | - k

where k is the factor of diminish

Now , when k = 4

The value of the modulus function is y = | x | - 4 and the graph is plotted

And , as x increases , the the value of y decreases and then increases

So , If x is positive, then f(x) = x

If x = 0, then f(x) = 0

If x < 0, then f(x) = -x

Hence , the modulus function is y = | x | - k

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Answer:

its B

Step-by-step explanation:

3.9*8.2*4.1 is 131.118

Answer:

4 x 8 x 4 = 128

if not then try

3.9 x 8.2 x 4.1 = 131.118

round to the nearest whole number to get: 131

Given:

I have walked 20% of the way to school.

I have 1200 metres more to walk than when I have 20% of the walk remaining.

To find:

The distance from home to school.

Solution:

Let x be the distance from home to school.

I have already walked 20% of the way to school and i have 1200 metres more to walk than when I have 20% of the walk remaining.

It means 1200 is [tex]100\%-20\%-20\%=60\%[/tex] of the total distance from home to school.

[tex]1200=\dfrac{60}{100}x[/tex]

[tex]1200=0.6x[/tex]

[tex]\dfrac{1200}{0.6}=x[/tex]

[tex]2000=x[/tex]

Therefore, the distance from home to school is 2000  metres.

How far, in metres, is it from my home to my school is 2,000 metres.

First step is to formulate

1200/(1-2×20%)

Second step is to find how far in metres

Distance=1200/(1-0.4)

Distance=1200/0.6

Distance=2,000

Inconclusion how far, in metres, is it from my home to my school is 2,000 metres.

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Answer:

5 batches

Step-by-step explanation:

fist to find how many cupcakes you need multiply the amount of people times amount of cupcakes per person

(if rule is 5 per person)

14x5=70

then you want to find how many batches to make

70/16=4.375

but you and make 0.375 batches so just make 1 more batch

so you should tell your dad to bake 5 batches

Answer:

B

Step-by-step explanation:

Angles a and b are complementary angles because they both add up to 90 degrees, which fulfills the definition of complementary.

Answer:

B, complementary

Step-by-step explanation:

I did something similar to this and got it correct- hope this was helpful!

Answer:

Volume = 4/3 * PI * radius^3

Volume = 4/3 * PI * 12.3^3

Volume = 1.33333333 * 3.14159265* 1860.867

Volume = 7794.7814531034

The answer is 7790.837

Step-by-step explanation:

Answer:

8 blocks because if you count it there are 8 boxes there

Answer:

24 is the LCM

Step-by-step explanation:

{ 12 , 24 , 36 , 48 }

{ 8 , 16 , 24 , 32 }

{ 24, 48 }

PLS GIVE BRAINLIST IF HELPFUL <33

Answer:

The coordinates of the midpoint between the two

points is (-1,4)

Step-by-step explanation:

Here, we want to find the midpoint between the two given points

To do this, we are to use the midpoint formula

We have this as;

m = (x1 + x2)/2, (y1 + y2)/2

(x1,y1) = (-7,9)

(x2,y2) = (5,-1)

(x,y) = (-7 + 5)/2, (9-1)/2

= (-2/2, 8/2) = (-1,4)

Answer:

3200

Step-by-step explanation:

1 pound = 16 ounces.

300 = 3 ounces.

2 pounds = 32 ounces.

If 300 calories are in 3 ounces, how many are in 32 ounces?

32 / 3 = 10 2/3

300 * 10 2/3 = 3200

Hope this helps!

Answer:

11.8cm²

Step-by-step explanation:

The area of the regular pentagon is expressed as;

A = pa/2

p is the perimeter of the pentagon

a is the apothem

Since p = 5s

s is the side length, hence;

A = 5sa/2

Get the side length s;

central angle = 360/5

central angle = 72degrees

angle in the right angle triangle =72/2 = 36degrees

Using SOH CAH TOA

sin 36 = x/2

x = 2sin36

x = 1.1755

s = 2x

s = 2.35cm

Get the area

A = 5(2.35)(2)/2

A = 5(2.35)

A = 11.8cm²

Hence the area of the regular pentagon is 11.8cm²

Answer:

11.8cM

Step-by-step explanation:

Answer:

9v^6r^8

Step-by-step explanation:

3v^6 · 3r^8

Step-by-step explanation:

hope this help have a great day

Answer:

3 times 12 equals 36. 36-4=32. The answer is 32

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

5/6 > 4/7 so you'd have to subtract from 5/6 to even get to 4/7.

The equation for the mileage difference is 5/6 - d = 4/7.

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows:

(Mathematical Operator, Number/Variable, Expression)

Given the distance covered by Hassan = 5/6 of mile

distance covered by Eva = 4/7 of mile

5/6 = 0.833

4/7 = 0.57

since Hassan has covered more distance than Eva

so  equation is 5/6 - d = 4/7

Hence option A is correct.

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Answer:

0.18

Step-by-step explanation:

Divide 5.40 by 30.

Can I have brainliest?

Answer:

0.18

Step-by-step explanation:

total cost - the amount of markers = price per marker

5.40/30=0.18

Answer:

The last one I think

Step-by-step explanation:

I’m not 100% sure

Answer:

The correct answer is C

Step-by-step explanation:

Hope this helps!

Answer:

A,B,C,D all have lines of symmetry

Step-by-step explanation:

Each letter listed above has one line of symmetry

Answer:

Its the 4th answer

False) S,T,U,V

False) L,M,N,O

False) W,X,Y,Z

True) A,B,C,D

Answer:

Volume: 762 in³

LA: 448 in²

SA: 544 in²

Step-by-step explanation:

So first, the volume, the formula to find the area is base x height, so we have to find the base first:

8 x 12 ÷ 2 = 48

48 x 14  = 672

So the volume of the prism is 762 in³

Now, the lateral area, which is basically the surface area without the bases, or, in this case, the triangles:

10 x 14 = 140 x 2 = 280

12 x 14 = 168

168 + 280 = 448

So the LA = 448 in²

Now, for the surface area:

12 x 8 = 96 (usually, it would then be ÷ 2, but because there are two triangles, it isn't necessary)

96 + 448 (the LA) = 544

So the SA = 544 in²

hope this is right:)

Note: Consider we need to find the circumference and area of the given circle.

Given:

A circle with radius 7.1 m.

To find:

The circumference and area of the given circle.

Solution:

Circumference of a circle is:

[tex]C=2\pi r[/tex]

Putting [tex]r=7.1,\pi=3.14[/tex], we get

[tex]C=2(3.14)(7.1)[/tex]

[tex]C=44.588[/tex]

[tex]C\approx 44.6[/tex]

Therefore, the circumference of the circle is 44.6 m.

The area of the circle is:

[tex]A=\pi r^2[/tex]

Putting [tex]r=7.1,\pi=3.14[/tex], we get

[tex]A=3.14(7.1)^2[/tex]

[tex]A=158.2874[/tex]

[tex]A\approx 158.3[/tex]

Therefore, the area of the circle is 158.3 sq. m.

Answer: Diane flips a fair coin 10 times and counts how many times it lands showing “heads.” Let H = the number of heads.

Step-by-step explanation: If the answer choices are:

- Lulu rolls a pair of fair dice until she gets a sum 10. Let T = the number of rolls it takes.

- Diane flips a fair coin 10 times and counts how many times it lands showing “heads.” Let H = the number of heads.

- Anna asks a random sample of 10 people how many siblings they each have. Let S = the average number of siblings in the sample.

Answer:

10°C is above ice point while -10°C is below ice point

Answer: $600 interest

Step-by-step explanation:

Formula

I=Prt

I=Interest amount

P=Principle

r=Interest rate

t=Time

Given

P= $1000.00

r= 6%

t= 10 years

Solve

I=Prt

I=(1000)(6%)(10)

I=$600

Hope this helps!! :)

Please let me know if you have any questions

Answer:

2.75feet

Step-by-step explanation:

Given data

Volume= 11.39 cubic feet

Length= 2.3 feet

Width= 1.8 feet

Depth= ???

The expression for the volume is  

Volume= Length*Width*depth

11.39=2.3*1.8*d

11.39=4.14d

d= 11.39/4.14

d= 2.75

Hence the depth is 2.75feet

Given:

The figure of triangle LNM.

To find:

The Law of Sines for the given triangle.

Solution:

Law of sines: In triangle ABC,

[tex]\dfrac{\sin A^\circ}{a}=\dfrac{\sin B^\circ}{b}=\dfrac{\sin C^\circ}{c}[/tex]

Similarly, the Law of Sines for the given triangle LNM is:

[tex]\dfrac{\sin L^\circ}{l}=\dfrac{\sin N^\circ}{n}=\dfrac{\sin M^\circ}{m}[/tex]

Therefore, the correct option is b.

Answer:

Step-by-step explanation:

Angle DBC is congruent with ADB as alternate interior angles

Answer:

49 is equal to 7 times 7

Step-by-step explanation:

perfect squares are a number that are the product of the same number e.g. 4*4=16, 5*5=25