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MAXImum [283]
3 years ago
5

Keeping the properties of exponents in mind to what power must your raise the expression 7 1/2 to get 7 as a result

Mathematics
1 answer:
exis [7]3 years ago
3 0

Answer:

x=2

Step-by-step explanation:

(7^ (1/2))ˣ = 7¹

1/2 *x =1

x =2

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14 out of the 25 students passed the quiz. What percent of students passed the quiz ?
Mnenie [13.5K]

Answer:

56

Step-by-step explanation:

A fraction consists of two numbers and a fraction bar:

14/25

The number above the bar is the numerator: 14

The number below the bar is the denominator: 25

Divide the numerator by the denominator to get fraction's value:

Val = 14 ÷ 25

Hoped it helped

7 0
2 years ago
What has a foot on each end and in the middle
cricket20 [7]
Is it a yardstick? It has 2 ft of the edges and one ft in the middle.
8 0
3 years ago
You invested $19,000 in two accounts paying 4% and 8% annual interest, respectively.
saveliy_v [14]

Answer:

$9000 at 4$

and

$10000 at 8%

Step-by-step explanation:

Let's assume that "x" is the amount deposited in the 4% account and "y" is the amount deposited in the 8% account.

Recall the formula for interest as : I= P * R *t

where I is the interest, R is the annual rate of interest and t is the number of years.

Since there are two investments, we need to add both interests at the end of the one year: I1 = x (0.04) (1) = 0.04 x   and   I2 = y (0.08) (1) = 0.08 y

Total Interest = Interest (from the 4% account) + Interest (from the 8% account)

Total Interest = $1160 = 0.04 x +  0.08 y

we also know that the total invested (x + y) adds to $19,000, that is:

$19,000 = x + y

Then we can solve these system of two equations by substitution, for example solving for y in the second equation and using the y substitution in the first equation;

y = 19000 - x

1160 = 0.04 x + 0.08 (19000 - x)

1160 = 0.04 x + 1520 - 0.08 x

0.08 x - 0.04 x = 1520 - 1160

0.04 x = 360

x = 360/0.04 = $9000

Then the other investment was : y = $19000 - $9000 = $10000

6 0
2 years ago
A sweatshirt is $67.50, if
lesya692 [45]

Answer:

a. $3.36

b. $70.86

Step-by-step explanation:

5% of $67.50 is $3.36

$67.50 + $3.36 = $70.86

4 0
2 years ago
Read 2 more answers
A patient is to receive 1.5 grams (g) of an antibiotic in 3 equal
nordsb [41]
1.5 g = 1500 mg

1500 / 250 = 6

the patient should take 6 tablets each dose.
4 0
3 years ago
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