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lidiya [134]
3 years ago
9

BRAINLIEST. NEED HELP NOW!!! What is the value of x?

Mathematics
1 answer:
Arturiano [62]3 years ago
3 0

Answer:

x=10

Step-by-step explanation:

these are similar triangles

8             12

------   = -----------

x+4          2x+1


using cross products

8* (2x+1) = 12(x+4)

distribute

16x + 8 = 12x+48

subtract 12x from each side

16x-12x +8 = 12x-12x+48

4x+8 = 48

subtract 8 from each side

4x+8-8 = 48-8

4x = 40

divide by 4

4x/4 = 40/x

x =10

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Shawn uses 45N of force to stop the cart 1 meter from running his foot over. How much work does he do?​
zalisa [80]

Answer:

\boxed {\boxed {\sf 45 \ Joules}}

Step-by-step explanation:

Work can be found by multiplying the force by the distance traveled in the direction of the force.

W=F*d

The force is 45 Newtons.

The distance traveled is 1 meter.

F=45 \ N \\d= 1 \ m

Substitute the values into the formula.

W=45 \ N * 1 \ m

Multiply.

W=45 \ N*m

1 Newton meter is equal to 1 Joules.

Therefore our answer of 45 Newton meters is equal to 45 Joules.

W= 45 \ J

The work done is <u>45 Joules.</u>

5 0
2 years ago
Read 2 more answers
Solve my question please, I’ll mark u as brainlest if the answer is correct and if you solved my question!!!
ikadub [295]

Answer:

x = price of balcony tickets = $7

y = price of orchestra tickets = $21

Step-by-step explanation:

Let

x = price of balcony tickets

y = price of orchestra tickets

y = 3x (1)

148y + 76x = 3,640 (2)

Substitute y = 3x into (2)

148y + 76x = 3,640 (2)

148(3x) + 76x = 3,640

444x + 76x = 3,640

520x = 3,640

x = 3,640/520

x = 7

Substitute x = 7 into (1)

y = 3x (1)

y = 3(7)

y = 21

x = price of balcony tickets = $7

y = price of orchestra tickets = $21

3 0
2 years ago
What is the simplest form of 4/9×4/5?
madam [21]

Answer:

16/45

Step-by-step explanation:

4/9 x 4/5=16/45 you just multiply straight across

7 0
3 years ago
Need answer ASAP<br><br><br><br><br> Express a 10/3 b 7/3 in simplified radical form.
anastassius [24]
I guess this is what you mean     3√a^10      and 3√b^7
5 0
3 years ago
A line passes through the points (-4,n) and (2,4n) and has the slope of 6. What’s the value of n?
Wittaler [7]

Not sure about this one sorry bud

4 0
3 years ago
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