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Ronch [10]
4 years ago
14

Which expression is equivalent?

Mathematics
2 answers:
Vedmedyk [2.9K]4 years ago
5 0
It’s answer D because when you slave it you will get -8x+19
Rashid [163]4 years ago
4 0

Answer:

D.

Step-by-step explanation:

First, we expand the expression using the rule:

x(y - z) = xy - xz

7  -  (4 \times 2x)- ( - 4 \times 3)

Double negative = Positive

7 - (4 \times 2x) + (4 \times 3)

7 - 8x  + 12

- 8x + 19

The answer is D.

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Find slope of given two points <br> (-14,3) (7,-9)
Vesna [10]

Answer:

5/4

Step-by-step explanation:

(y2 - y1) / (x2 - x1)

(-9 + 14) / (7 - 3)

5/4

6 0
3 years ago
Solve the triangle. Round side measure to the nearest tenth and angle measures to the nearest degree.
shutvik [7]
First calculate the missing angle \alpha. By knowing all angles in triangle have a sum of 180°.

\alpha=180-(\gamma+\beta)
\alpha=180-(90+49)=\boxed{41}

Now we required to use angle functions in a right triangle. The cosine of \beta is equal to the relation of side a and hypotenuse c.

Now we solve this for hypotenuse.

\cos(\beta)=\frac{a}{c}

c=\frac{a}{\cos(\beta)}

Now put in the numbers.

c=\frac{9}{\cos(49)}\approx\boxed{13.7}

So we know the length of hypotenuse and length of side a therefore side b can be calculated using Pythagorean theorem: c^2=a^2+b^2.

Solve for side b.

c^2=a^2+b^2

b=\sqrt{c^2-a^2}

b=\sqrt{13.7^2-9^2}\approx\boxed{9.7}

So there you go. If you have any questions feel free to ask.

r3t40
6 0
4 years ago
Solving Equations with the Variable on Each Side · Practice
JulijaS [17]

Hello friend , I hope it's helps you

enjoy your day

4 0
3 years ago
Read 2 more answers
Maria bought 1-1/4 yard of yellow ribbon then she bought 2-2/5 yards of blue ribbon. How much ribbon did she buy?
kkurt [141]
3 13/20 yards. 
Make 1 1/4 to 1 5/20
make 2 2/5 to 2 8/20
Add them together and get the answer!
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3 years ago
What time is a quarter of an hour past 8:15 a.m.?
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8:30 am. A quarter of an hour is 15 min
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3 years ago
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