7th grade math help me pleasee

Answer:

3/13

Step-by-step explanation:

Here is the full question

There are seven nickels and seven dimes in your pocket. You randomly pick a coin out of your pocket and place it on a counter. Then you randomly pick another coin. Find the probability that both coins are nickels.

Because there is no replacement, after you pick the first coin, the number of coins in your pocket becomes 13 and the number of nickels in your pocket becomes 6

probability that both coins are nickels = probability that the first coin is a nickel x probability second coin is a nickel

7/14 x 6/13 = 3/13

Answer:

Yes

Step-by-step explanation:

It is given that a prism is built that have a volume of 36.

Now if the prism is rebuild with either centimeter cubes or the inch cubes or foot cubes will have the same volume of 36 as the volume here is constant. The centimeter cubes used to build the prism will be smaller in size and will require more of the cubes to build the cube for a volume of 36.

Similarly, if we take inch cubes or the foot cubes, to build a prism having a volume of 36, we need to take less number of the cubes accordingly.

Answer:

h(2)= -17

Step-by-step explanation:

Answer:

h(x) = 31

Step-by-step explanation:

When it says find h (2), you will have to replace x with 2

h(x) = 3x^2 -5

h(x) = 3(2)^2 -5

h(x) = 6^2 - 5

h(x) = 36 - 5

h(x) = 31

Hope this helps =)

Answer and Step-by-step explanation:

Plug 2 in for x into the expression.

[tex](2)^{2} + \frac{1}{2^{2} } \\\\\\4 + \frac{1}{4} \\\\\\4 + 0.25\\\\\\4.25[/tex]

4.25 is the answer.

#teamtrees #PAW (Plant And Water)

Answer:

4.25 i believe

Step-by-step explanation:

Answer: its 1

Step-by-step explanation:

Answer:

He would pay $11.50 for two pounds of walnuts with the coupon.

7x - 2.5

x is the pounds of walnuts purchased

Answer: 10 miles

Step-by-step explanation:

You can set this up as an equation where x will represent the number of miles charged. So if we know how much the pick up fee is, how much it is per mile and the total charge we can set up the equation as follows:

3.20 + 3x = 33.20

If we solve for x we will find out how many miles she traveled. So to do so we need to get x on one side and the other numbers on the other side of the equal sign. So to begin we'll subtract 3.20 from both sides:

3x = 30.00

and then divide both sides by 3:

x = 10

So she traveled 10 miles.

The Taxi ride was 10 miles.

An equation is an expression that shows the relationship between two or more numbers and variables.

We can set an equation where x will represent the number of miles charged. So, the total charge we can set up the equation as follows:

3.20 + 3x = 33.20

If we solve for x we will find out the miles she traveled.

Then subtract 3.20 from both sides:

3x = 30.00

then divide both sides by 3;

x = 10

Therefore, she traveled 10 miles.

Learn more about equations here;

https://brainly.com/question/25180086

#SPJ3

Answer:

36.5

Step-by-step explanation:

255.5/7 = 36.5

Answer:

let base = 6cm

perpendicular =x cm

hypotenuse =10cm

by using Pythagoras law

hypotenuse ²=perpendicular ²+base²

10²=x²+6²

100-36=x²

x=√64=8cm

the measure of the other leg is 8cm

The measure of the other leg of the right triangle is equal to 8 cm.

Given the following data:

To find the measure of the other leg, we would apply Pythagorean's theorem:

Mathematically, Pythagorean's theorem is given by the formula;

[tex]Hypotenuse^2 = opposite^2 + adjacent^2[/tex]

Substituting the given parameters into the formula, we have;

[tex]10^2 = opposite^2+6^2\\\\100= opposite^2+36\\\\Opposite^2=100-36\\\\Opposite^2=64\\\\Opposite=\sqrt{64}[/tex]

Opposite = 8 cm

Read more: https://brainly.com/question/14930619

Answer:

≈ 49.9° and ≈ 71.0°

Step-by-step explanation:

Using the sine ratio in the right triangle

sin? = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{13}{17}[/tex] , then

? = [tex]sin^{-1}[/tex] ([tex]\frac{13}{17}[/tex] ) ≈ 49.9° ( to the nearest tenth )

----------------------------------------------------------------

Using the cosine ratio in the right triangle

cos? = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{14}{43}[/tex] , then

? = [tex]cos^{-1}[/tex] ([tex]\frac{14}{43}[/tex] ) ≈ 71.0° ( to the nearest tenth )

Answer:

172,872÷6=28,812.33 I believe this is the answer

Answer:

solve for x: x = 17b/ 5

Solve for b: B= 5x/ 17

hope this helps :)

Answer:

I would go with answer B

Step-by-step explanation:

The starting of the decreasing is B and slowly decreases down to C

Answer:

2

Step-by-step explanation:

[tex]\sqrt[3]{8} = 2[/tex]

Answer:

2

Step-by-step explanation:

THE answer is 2

2cube

=2x2x2

=8

Answer:

∠POM and ∠POR

Step-by-step explanation:

Step-by-step explanation:

angle POM and angle QRT

Answer:

5

Step-by-step explanation:

Answer:

2.6, 2.6081, 2.68, 3.119

Step-by-step explanation:

Look at the number before the decimal first. After look at the decimal points, the one with the smallest amount will be the least greatest (2.6) because it has no numbers after it.

Answer:

6n^2-8n+2

Step-by-step explanation:

(4n^2-5n+6)+(2n^2-3n-4)

4n^2+2n^2-5n-3n+6-4

6n^2-8n+2

Answer:

6n^2-8n+2

Step-by-step explanation:

cuz I’m smart

Answer:

A car can travel 4800 miles in 60 hours

Step-by-step explanation:

Answer:

4800

Step-by-step explanation:

if the car drives 320 in 4 hours that means it travels 80 miles for 2 hour. multiply 80 by 60 and get 4800

Answer:

34

Step-by-step explanation:

Answer:

81.692in

Step-by-step explanation:

Given data

Diameter =26in

Radius = 12in

The expression for the circumference is given as

Circumference = 2πr

Substitute

C=2*3.142*13

C=81.692in

Hence the circumference is 81.692in

Answer:

First, we will prove the difference formula for cosines. Let’s consider two points on the unit circle. Point \displaystyle PP is at an angle \displaystyle \alphaα from the positive x-axis with coordinates \displaystyle \left(\cos \alpha ,\sin \alpha \right)(cosα,sinα) and point \displaystyle QQ is at an angle of \displaystyle \betaβ from the positive x-axis with coordinates \displaystyle \left(\cos \beta ,\sin \beta \right)(cosβ,sinβ). Note the measure of angle \displaystyle POQPOQ is \displaystyle \alpha -\betaα−β.

Label two more points: \displaystyle AA at an angle of \displaystyle \left(\alpha -\beta \right)(α−β) from the positive x-axis with coordinates \displaystyle \left(\cos \left(\alpha -\beta \right),\sin \left(\alpha -\beta \right)\right)(cos(α−β),sin(α−β)); and point \displaystyle BB with coordinates \displaystyle \left(1,0\right)(1,0). Triangle \displaystyle POQPOQ is a rotation of triangle \displaystyle AOBAOB and thus the distance from \displaystyle PP to \displaystyle QQ is the same as the distance from \displaystyle AA to \displaystyle BB.

Step-by-step explanation:

Answer:

13000m

Step-by-step explanation:

Given data

Total distance travelled=  65,000

Number of days= 5 days

Hence the distance covered per day is

= 65,000/5

=13000m

Therefore the distance covered per day is 13000m

Answer:

a=65

Step-by-step explanation:

in a right angle theres 90 degrees.

90-25=65

Answer:

D

Step-by-step explanation:

Given

a² - 36 = 5a ( subtract 5a from both sides )

a² - 5a - 36 = 0

Consider the factors of the constant term (- 36) which sum to give the coefficient of the a- term (- 5)

The factors are - 9 and + 4 , since

- 9 × + 4 = - 36 and - 9 + 4 = - 5 , then

(a - 9)(a + 4) = 0 ← in factored form

Equate each factor to zero and solve for a

a - 9 = 0 ⇒ a = 9

a + 4 = 0 ⇒ a = - 4

solution is { - 9, 4 } → D

Answer:

2,100

Step-by-step explanation:

$200 * 3.5= $700

$700 * 3= $2,100