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3 years ago

If 3x + 4y = 15, find an equation solving for x

Mathematics

1 answer:

nikklg [1K]3 years ago

5 0

Answer:

x=105

Step-by-step explanation:

3x+4y=15

3x+4y=7

7*15=105

x= 105

i really hopes this helps i did this in last semester

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Determining angle side relationships What are the angle measures in trainable ABC?

9966 [12]

Answer:

m∠A=90°, m∠B=60°, m∠C=30°

Step-by-step explanation:

step 1

Verify if the triangle ABC is a right triangle

Applying the Pythagoras theorem

$12^{2}=6^{2}+(6\sqrt{3})^{2}$

$144=144$ ----> is true

therefore

Is a right triangle

m∠A=90°

Find the measure of angle C

sin(C)=AB/BC

substitute

sin(C)=6/12=1/2

m∠C=30°

Find the measure of angle B

we know that

m∠C+m∠B=90°------> by complementary angles

m∠B=90°-30°=60°

5 0

3 years ago

Does anyone know the answer to this scale and unit conversion GED math problem? Thank you very much!

aliya0001 [1]

Answer:

Flour $5\dfrac{1}{2}\ c$

Sugar $2\dfrac{2}{3}\ c$

Butter $1\dfrac{1}{2}\ c$

Eggs $2$

Baking powder $7\ t$

Vanilla extract $3\ t$

Step-by-step explanation:

There will be 16 people at the party. Each person will eat 3 cookies, so all people will eat $16\cdot 3=48$ cookies.

Given cookie recipe makes 24 cookies, so to make 48 cookies you need

$48:24=2$ portions.

Thus,

1 portion 2 portions

Flour $2 \dfrac{3}{4}\ c$ $2\dfrac{3}{4}\cdot 2=2\cdot 2+\dfrac{3}{4}\cdot 2=4+\dfrac{3}{2}=4+1 \dfrac{1}{2}=5\dfrac{1}{2}\ c$

Sugar $1\dfrac{1}{3}\ c$ $1\dfrac{1}{3}\cdot 2=1\cdot 2+\dfrac{1}{3}\cdot 2=2+\dfrac{2}{3}=2\dfrac{2}{3}\ c$

Butter $\dfrac{3}{4}\ c$ $\dfrac{3}{4}\cdot 2=\dfrac{3}{2}=1\dfrac{1}{2}\ c$

Eggs $1$ $1\cdot 2=2$

Powder $3\dfrac{1}{2}\ t$ $3\dfrac{1}{2}\cdot 2=3\cdot 2+\dfrac{1}{2}\cdot 2=6+1=7\ t$

Vanilla $1\dfrac{1}{2}\ t$ $1\dfrac{1}{2}\cdot 2=1\cdot 2+\dfrac{1}{2}\cdot 2=2+1=3\ t$

8 0

3 years ago

Emily biked 9 miles in 3/4 hour. Which expression can she use to find her unit rate in miles per hour?

frosja888 [35]

The expression will be 9 x 3/4

7 0

4 years ago

Read 2 more answers

Which point could be on the line that is perpendicular

slamgirl [31]

Answer:

b (2,2)

Step-by-step explanation:

4 0

3 years ago

After a reflection over the line x-axis, (8,11) is the image of point C. What is the original location of point C.

goblinko [34]

(-8, -11) because the points are just the opposite sign when reflecting over the x-axis

7 0

3 years ago