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Licemer1 [7]
3 years ago
13

Problem Page Simplify. −7a3a please helppp

Mathematics
1 answer:
nalin [4]3 years ago
5 0
Multiply them!! First multiply the numbers. -7*3 = -21. But then, you have to multiply the variables. What is a times a equal to? Well, a times a is just a squared. Hence, the expression is equal to -21 a^{2}
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6-5 solving rational equations 8/x+3=1/x+1
AfilCa [17]

Answer:

x = -5/7

Step-by-step explanation:

8/(x+3)=1/(x+1)

Using cross products

8*(x+1) = 1*(x+3)

Distribute

8x+8 = x+3

Subtract x from each side

8x-x +8 = x+3-x

7x +8 =3

Subtract 8 from each side

7x+8-8 = 3-8

7x = -5

Divide by 7

7x/7 = -5/7

x = -5/7

7 0
3 years ago
Please help urgent 7th grade math question?! begging?
ch4aika [34]

Answer:

no. B 40x+30y=60 l think

3 0
3 years ago
Please help me thanks please
Ludmilka [50]

Answer: 3234 cubic units

Step-by-step explanation:

Volume of cylinder: πr²h

The diameter of the cylinder is 14 units so the radius is 7 units.

Now we'll substitute.

π = 22/7

h = 21

πr²h

π × 7² × 21

22/7 × 49 × 21 = 3,234

The volume is 3,234 cubic units.

6 0
3 years ago
Find The Perimeter Of The Shaded Region <br><br> 90 ft<br> 58 ft<br> 24 ft <br> 38 ft
CaHeK987 [17]
L  = 14 - 6 = 8
w = 15 - 4 = 11

P of shaded = 2(8+9) = 2 (19) = 38

answer
last one 38ft
8 0
3 years ago
Read 2 more answers
Kasey has 8 packages of gelatin. She plans to fill molds that each take 1 1/3 packages of gelatin. Each mold can be divided into
Ipatiy [6.2K]

if in total Kasey has 8 packaged of gelatin and it takes 1 1/3 for each mold which equals 6 servings than you could work it out as

8 divided by 1 1/3=6.015 since its not a whole number than you'd want to go down to just 6 resulting in Kasey creating 6 molds

6 molds times 6 servings= 36 servings

6 0
3 years ago
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