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2 years ago

Solve for A. 7a + 2 = 3a + 14

Mathematics

2 answers:

anzhelika [568]2 years ago

8 0

A= 3

good luck on the assignment.

frutty [35]2 years ago

3 0

A=22 you're welcome if you need help dm me

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Work out the area of a rectangle with base, b = 32mm and perimeter, P = 82mm.

Amanda [17]

Perimeter = 2base + 2base
82 - 2(32) = 18 : 2 = 9
area = 9*32 = 288mm^2

7 0

1 year ago

Read 2 more answers

Evaluate tan45/sin30 . In your final answer, include all calculations.

Maslowich

From the identity $\displaystyle{ \tan x= \frac{\sin x}{\cos x}$ , and from the values:

$\sin45^{\circ}=\cos45^{\circ}= \frac{ \sqrt{2}}{2}$ ,

we have: $\displaystyle{ \tan 45^{\circ}= \frac{\sin 45^{\circ}}{\cos 45^{\circ}}= \frac{ \frac{ \sqrt{2}}{2}}{\frac{ \sqrt{2}}{2}} =1$ .

We also know that $\sin30^{\circ}= \frac{1}{2}$ .

Thus, $\displaystyle{ \frac{\tan 45^{\circ}}{\sin30^{\circ}} = \frac{1}{\frac{1}{2}}=2.$

Answer: 2

8 0

3 years ago

(10 POINTS) answer ASAP if you can

atroni [7]

Answer: As soon as possible

Step-by-step Explanation: You just say ASAP for As soon as possible

3 0

2 years ago

Solve the following inequality for dd. Write your answer in simplest form. −7d−3>2d-10

LUCKY_DIMON [66]

Answer:

d < 7/9

Step-by-step explanation:

Add 7d +10

7 > 9d

Divide by 9

7/9 > d

3 0

2 years ago

Help ! solve the following system of equations -9x+2y=-13 2x-9y=20

Stella [2.4K]

Answer: x = 1, y = -2

Step-by-step explanation:

-9x+2y=-13

x= 13/9 + 2/9y

2x-9y=20

2(13/9+2/9y)-9y=20

Substitute y with -2.

x= 13/9+2/9(-2)

After solving you'll see that 1 is a possible solution for x.

Check your answer

-9x+2y=-13

-9x1+2(-2) = -13

2x-9y=20

2x1-9(-2) = 20

-13 = -13

20 = 20

Therefore, x=1 and y=-2

5 0

2 years ago