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3 years ago

Help plz:))) I’ll mark u brainliest ASAP!!!

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

8 0

Answer:

m<WTS = 9 degrees

Step-by-step explanation:

<WTS = <TRS + <TSR By exterior <'s

14x-6=7x-9+66 Substitute

7x=63 Algebra

x=9

TiliK225 [7]3 years ago

5 0

Answer:

120

Step-by-step explanation:

solve for x then substitute

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Two cars, one going due east at 25 m / sec and the second going due south at 50/3 m / sec are traveling toward the intersection

valkas [14]

Answer:

30 m/s

Step-by-step explanation:

Let's say the distance from the first car to the intersection is x, and the distance from the second car to the intersection is y.

The distance between the cars can be found with Pythagorean theorem:

d² = x² + y²

Taking derivative with respect to time:

2d dd/dt = 2x dx/dt + 2y dy/dt

d dd/dt = x dx/dt + y dy/dt

We know that x = 200, dx/dt = -25, y = 150, and dy/dt = -50/3.

To find dd/dt, we still need to find d.

d² = x² + y²

d² = (200)² + (150)²

d = 250

Plugging everything in:

250 dd/dt = (200) (-25) + (150) (-50/3)

dd/dt = -30

The cars are approaching each other at a rate of 30 m/s at that instant.

4 0

3 years ago

Help what’s the answer

Setler79 [48]

It’s A, D and E

Hope this helped :))

6 0

3 years ago

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Two planes intersect in exactly _____.

Roman55 [17]

C

Like two walls they touch the whole line

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3 years ago

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Find the are of a parallelogram that has a base of 7 1/2 and a height of 5 2/7

Amiraneli [1.4K]

Use the formula for the area of a parallelogram:

$\sf A=bh$

Plug in what we know:

$\sf A=(7\dfrac{1}{2})(5\dfrac{2}{7})$

Convert both of them into improper fractions. We do this by multiplying the denominator to the whole number, adding it to the numerator, which becomes our new numerator, and we keep the denominator the same:

$\sf A=(\dfrac{15}{2})(\dfrac{37}{7})$

Now multiply the numerators and denominators together:

$\sf A=\dfrac{15}{2}\cdot\dfrac{37}{7}\rightarrow\dfrac{15\cdot 37}{2\cdot 7}\rightarrow\dfrac{555}{14}$

Convert it back into a mixed number. 14 goes into 555 thirty-nine times. 14 * 39 = 546. 555 - 546 = 9. So we have 39 wholes and 9 left over, or:

$\sf 39\dfrac{9}{14}$

So this is the area of the parallelogram.

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3 years ago

BRAINLIEST AND 15 POINTS!! Look at attachment

zzz [600]

I don’t see an attachment

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3 years ago

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