3 years ago

What times what equals 20 and adds to -9

Mathematics

2 answers:

umka21 [38]3 years ago

5 0

I think the numbers are -5 and -4.

Softa [21]3 years ago

5 0

Answer:

-5, -4

Step-by-step explanation:

So if you know negative integers, you can do -5 * -4 which would equal positive 20.

And -5 + -4 would equal -9.

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Find the volume of a cone with diamter 12 and height 8

NeX [460]

Answer:

Step-by-step explanation:

V = 1/3 * pi * r^2 * h

d = 12

r = d/2

r = 12/2

r = 6

V = 1/3 * 3.14 * 6^2 * 8

V = 301.44

3 0

3 years ago

A car dealership pays $8,550 for a car. They markup the price by 20.4% to get the retail price. What is the retail price of the

marin [14]

Answer:

$10294.20

Step-by-step explanation:

8550 increase 20.4% =

8550 × (1 + 20.4%) = 8550 × (1 + 0.204) = 10294.2

3 0

3 years ago

What is the area of a trapezoid that has bases of 1feet and 14 inches and a height of 3 inches? A 43.5 in.^2 B 87 in.^2 C 22.9 i

Black_prince [1.1K]

Answer:

Option A. $43.5\ in^{2}$

Step-by-step explanation:

we know that

The area of a trapezoid is equal to

$A=(1/2)(b1+b2)h$

we have

$b1=1\frac{1}{4}\ ft$

$b2=14\ in$

$h=3\ in$

Convert feet to inches first

Remember that

$1\ ft=12\ in$

$1\frac{1}{4}\ ft=\frac{5}{4}\ ft=12*\frac{5}{4}=15\ in$

substitute in the formula

$A=(1/2)(15+14)3=43.5\ in^{2}$

5 0

3 years ago

PtichkaEL [24]

Answer: C an equilateral triangle

Step-by-step explanation:

4 0

3 years ago

Help help help i have four more

KiRa [710]

Step 1) distribute the 17: -16+119w-204
Step 2) combine like terms: 119w-220

ANSWER: 119w-220

4 0

3 years ago