All categories

3 years ago

Loni has read 25% of a book if she has been reading for 5 hours, how many more hours will it take her to complete the book

Mathematics

2 answers:

romanna [79]3 years ago

6 0

Answer:

15 hours

Step-by-step explanation:

The way we can find this is by taking both 25% and 5 and multiplying them by 4. The reason we do this is because 25% x 4 will equal 100% so it will show us how many hours total she needs to read.

5 x 4 = 20

Now we just subtract the amount of hours she has already read for which is 5.

20 - 5 = 15

Hope this helped ! !

if it did please consider marking brainliest i would appreciate it greatly :)

Ivahew [28]3 years ago

4 0

Answer: It will take her 15 more hours to finish the book.

Step-by-step explanation:

25% : 5h

50% : 10h

75% : 15h

100% : 20h

It would take 20 hours to complete the book, but because she already read for 5 hours, it would be 15 to finish the book.

You might be interested in

Can someone help with this please

crimeas [40]

Answer:

x2 1-

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Suppose that the hourly wages of fast food workers are normally distributed with an unknown mean and standard deviation. The wag

Nutka1998 [239]

Answer: 1.303639

Step-by-step explanation:

The t-score for a level of confidence $(1-\alpha)$ is given by :_

$t_{(df,\alpha/2)}$ , where df is the degree of freedom and $\alpha$ is the significance level.

Given : Level of significance : $1-\alpha:0.80$

Then , significance level : $\alpha: 1-0.80=0.20$

Sample size : $n=40$

Then , the degree of freedom for t-distribution: $df=n-1=40-1=39$

Using the normal t-distribution table, we have

$t_{(df,\alpha/2)}=t_{39,0.10}=1.303639$

Thus, the t-score should be used to find the 80% confidence interval for the population mean =1.303639

8 0

3 years ago

PLZZZ HELPP anyonee plzzzz

mihalych1998 [28]

Answer:

The correct answer is B

Step-by-step explanation:

its is B because when dividing fractions the division symbol changes into a multiplication sign and the fraction on the right flips

High Hopes^^

Barry-

8 0

3 years ago

Read 2 more answers

Factor x3-2x2-9x+18 completely if(x+3) is a factor

Charra [1.4K]

Factor x^3 -2x^2-9x+18

= x^2(x - 2) - 9(x - 2)

= (x^2 - 9)(x -2)

= (x + 3 )(x - 3)(x - 2)

So (x+3) is a factor

6 0

3 years ago

Read 2 more answers

Using the provided measures determine the measure of angle K.

forsale [732]

Answer:

B. 34.90°

Step-by-step explanation:

✔️First, find GF using Trigonometric function:

Reference angle = 58°

Adjacent length = GF

Hypotenuse = 6 cm

Apply CAH, thus:

Cos 58 = Adj/Hyp

Cos 58 = GF/6

GF = 6*Cos 58

GF = 3.17951558 ≈ 3.18 cm

✔️Find angle K using the Sine Rule:

$\frac{sin(K)}{GF} = \frac{sin(G)}{KF}$

Substitute

$\frac{sin(K)}{3.18} = \frac{sin(64)}{5}$

Multiply both sides by 3.18

$sin(K) = \frac{sin(64)}{5}*3.18$

$sin(K) = 0.5716$

$K = sin^{-1}(0.5716)$

K = 34.8618741° ≈ 34.90°

5 0

2 years ago