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3 years ago

Write the expression without the fraction bar.

Mathematics

1 answer:

tino4ka555 [31]3 years ago

7 0

Should be y-5 because you’re diving the separate bases with exponents so you have to subtract the actual exponent values

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10 POINTS HELP ASAP!!!

Vlada [557]

Answer:

I think it is -7

Step-by-step explanation:

8 0

3 years ago

X^2+y^2- 2y - 99 = 0<br> What is the center of this circle ? What is the radius of this circle

stich3 [128]

Answer:

Center: (0, 1); radius: 10

Step-by-step explanation:

Your x^2+y^2- 2y - 99 = 0 is centered at (0, k):

(x - 0)^2 + y^2 - 2y - 99 = 0

and you must "complete the square" of y^2- 2y

to determine the value of k:

(x - 0)^2 + y^2 - 2y + 1 - 1 - 99 = 0, or

(x - 0)^2 + (y - 1)^2 = 100 = 10^2

The center is at (h, k) : (0, -1) and the radius is 10.

The equation in final form is

x^2 + (y - 1)^2 = 10^2

The radius is 10. That is, since r^2 = 100, r must be 10.

4 0

4 years ago

How does kinetic energy affect the stopping distance of a vehicle traveling at 30 mph compared to the same vehicle traveling at

Aleks04 [339]

The vehicle traveling 60 mph is going 4 times as fast. the brakes must do an amount of work that's equal to the original kinetic energy. the brakes exert the same amount of force no matter what the case is, so the stopping distance will be four times as long for the car going 60 mph compared to the car going 30 mph.

8 0

3 years ago

For Problem 10, simplify the expressions using properties of operations. 10. (t - 1) – (-7t+2)

zvonat [6]

Answer:

8t-3

Step-by-step explanation:

(t-1)-(-7t+2)

t-1+7t-2

t+7t-1-2

8t-1-2

8t-3

4 0

3 years ago

Jordan bought a notebook for $5, 6 pencils for $1 each, and a binder for $9. The sales tax for the whole purchase was $2

svet-max [94.6K]

1.
$t=$ total
$t=5+6(1)+9$
$t=20$
$20 total

$p=$ sales tax from purchase
$s=$ sales tax percentage
$ts=p\\20s=2 \\ s= \frac{2}{20} \\ s=.1$
$.1(100)=10$
10% sales tax

2.
$t=$ total
$t=6+2(3.5)+2(3.5)$
$t=6+7+7$
$t=20$
$20 total

$p=$ sales tax from purchase
$s=$ sales tax percentage
$ts=p \\20s=1\\ s= \frac{1}{20} \\ s=.05$
$.05(100)=5$
5% sales tax

6 0

4 years ago