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Elanso [62]
3 years ago
6

3(x^2+2x-3)-4(4x^2-7x+5) is equivalent to

Mathematics
1 answer:
Harman [31]3 years ago
7 0
Use photo math.........
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SOMEONE PLEASE HELP!
Andrews [41]

Answer:

17.2°

Explanations

To find angle A, use the cosine rule.

a^2 = b^2 + c^2 - 2 × a × c cos A

4^2 = 7^2 + 10^2 - 2 × 7 × 10 cos A

16 = 49+ 100 - 140 × cosA

16 = 149 - 140cosA

16- 149 = - 140cosA

-133 = - 140cosA

cosA = 133/140

cosA = 0.95

A = 17.2°

7 0
2 years ago
Find the area and the circumference of a circle with diameter 3 ft.
Zigmanuir [339]

Step-by-step explanation:

circumference of a circle

2×pi×r

area of a circle

pi×r²

r (radius) = diameter/2 = 1.5ft

we shall assume pi to be 3.14

circumference is

2×3.14×1.5 = 3.14×3 = 9.42 ft

area is

3.14 × 1.5² = 3.14×2.25 = 7.065 ft²

3 0
3 years ago
I furniture sales person sells account for $1560 she receives a 2.75% commission on the sale of the cat how much did she earn on
horrorfan [7]
Just 1560x.0275

$42.90
5 0
3 years ago
ANSWER QUICK!!!!
deff fn [24]

Answer:

C

Step-by-step explanation:

When we write an equation, we look for something like is or equals

A.twice as much as a number   2x

B.12 less than a number      x-12

C.half of a number is 15   1/2x =15

D.the difference of 20 and a number?  20-x

A,B, and D are expressions

8 0
3 years ago
Read 2 more answers
Find the greatest common factor of 11 m2 and 8m.
mixas84 [53]

Answer:

1m

The greatest common factor is one. They also have an ‘m’ in common

Hope this helps

8 0
3 years ago
Read 2 more answers
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