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Reika [66]
2 years ago
5

Help Me Please (30 Points) + Brainliset Answer (Repost)

Mathematics
2 answers:
Sever21 [200]2 years ago
8 0
For one minute: 60 times
for 60 minutes(1hour): 60*60=3600 times
for 90 min: 60*90=5400 times
allsm [11]2 years ago
7 0
60 x 60 = 3600 (1 hour)
60 x 30 = 1800 (half hour)
3600 + 1800 = 5400 for one and half hour
answer C. 5400
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Help on this please show my work ?
Mandarinka [93]
Factor the denominator
x^2+3x-10
(x+5)(x-2)

(x-2)/((x+5)(x-2))

The x-2 in the numerator and denominator cancel out.

Final answer: x+5
5 0
3 years ago
Which choice is equivalent to the quotient below? √64/√4<br>a. √2<br>b. √4/4<br>c. √8/2<br>d. 4​
Ksju [112]

Step-by-step explanation:

you did not even try a calculator to find the result ?

64 is 8×8 or 8².

so, sqrt(64) = 8.

similarly for 4 :

4 is 2×2 or 2².

so, sqrt(4) = 2

so,

sqrt(64)/ sqrt(4) = 8 / 2 = 4

so, d. is the right answer.

4 0
2 years ago
The diffrence of twice a number and 3 is -21
Alika [10]

Answer:

x = - 9

Step-by-step explanation:

Step 1:

2x - 3 = - 21    Equation

Step 2:

2x = - 18     Add 3 on both sides

Step 3:

- 18 ÷ 2    Divide

Answer:

x = - 9

Hope This Helps :)

8 0
3 years ago
Find the constant of variation k for the inverse variation. Then write an equation for the inverse variation. Y=4.5 when x = 3
Nookie1986 [14]
\bf \qquad \qquad \textit{inverse proportional variation}\\\\&#10;\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad  y=\cfrac{k}{x}\impliedby &#10;\begin{array}{llll}&#10;k=constant\ of\\&#10;\qquad  variation&#10;\end{array}\\\\&#10;-------------------------------\\\\&#10;\textit{we also know that }&#10;\begin{cases}&#10;y=4.5\\&#10;x=3&#10;\end{cases}\implies 4.5=\cfrac{k}{3}\implies 4.5(3)=k&#10;\\\\\\&#10;13.5=k\qquad therefore\qquad \boxed{y=\cfrac{13.5}{x}}
8 0
2 years ago
I need to know the answer
Lynna [10]
It would be 3/16.
In the previous post you had 54 which you didn't put into a fraction.

6x-3/2-3x=5/4-x-2
Which simplifies to:
4x-3/2=-3/4
4x=3/4
Turn the denominator to 16 by 4 and also multiply the top by 4 which becomes 12/16.
Divide the 12 by 4 and you get 3/16 which is the answer.
5 0
3 years ago
Read 2 more answers
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