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3 years ago

Jen and Maria have dance class at 3:45 . Write the time two different ways. Is it am or pm ? Explain

Mathematics

2 answers:

jonny [76]3 years ago

6 0

Dance class is at 3:45pm, because the dance studio would not be open that early.

V125BC [204]3 years ago

3 0

3:45 or 15:45. It is p.m. because they would not open that early in the morning

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Which is the graph of f（x）？

Kay [80]

Answer:

Third graph is the correct choice. See below.

Step-by-step explanation:

See the attachment below.

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2 years ago

Solve the equation. −10x + 1 + 7x = 37 x = −15 x = −12 x = 12 x = 15

k0ka [10]

−10x + 1 + 7x = 37

-10x+7x+1=37

-3x+1= 37

Move +1 to the other side. Sign changes from +1 to -1.

-3x+1-1= 37-1

-3x=36

Divide by -3.

-3x/3= 36/-3

x= -12

Answer : x= -12

6 0

2 years ago

Read 2 more answers

A recipe for cookies calls for 2/3 of a cup of sugar per batch. Elena used 5 1/3 cups of sugar to make multiple batch of cookies

Neporo4naja [7]

Answer: 8 batches

Step-by-step explanation:

To get the number of batches she made, we can just use proportion to solve it. But first, we need to convert 5 1/3 to improper fraction

5 1/3 = 16/3

Then we can now use the proportion to solve

2/3 cups = 1 batch

16/3 cups = x (note:5 1/3=16/3)

cross multiply

2/3 × x = 16 /3

2x/ 3 = 16/3

we need to make x the subject of the formula, to do that we will multiply each side of the equation by 3/2

2/3 × 3/2 x = 16/3 × 3/2

6x /6 = 48 / 6

x = 8

Therefore she made 8 batches of cookies.

5 0

2 years ago

A music industry researcher wants to estimate, with a 90% confidence level, the proportion of young urban people (ages 21 to 35

Maslowich

Answer:

1,539

Step-by-step explanation:

Using Simple Random Sampling in an infinite population (this is such a large population that we do not know the exact number) we have that the sample size should be the nearest integer to

$\large \frac{Z^2pq}{e^2}$

where

Z= the z-score corresponding to the confidence level, in this case 90%, so Z=1.645 (this means that the area under the Normal N(0,1) between [-1.645,1.645] is 90%=0.9)

p= the proportion of young urban people (ages 21 to 35 years) who go to at least 3 concerts a year= 35% = 0.35

q = 1-p = 0.65

e = the error proportion = 2% = 0.02

Making the calculations

$\large \frac{Z^2pq}{e^2}=\frac{(1.645)^2*0.35*0.65}{(0.02)^2}=1,539.09$

So, the sample size should be 1,539 young urban people (ages 21 to 35 years)

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2 years ago

Select the objects that hold the same amount of liquid as a 128−fluid-ounce jug. Select all that apply. A three 8−ounce fluid gl

Salsk061 [2.6K]

The correct answers are C, D, and E.

1 quart = 32 fl oz
1 pt = 16 oz

Using these conversions you will multiply the number of quarts or pints by the number of ounces in each and then add the totals together to find if they equal 128 oz.

C. 4 x 32 = 128 oz
D. 2 x 32 + 8 x 8 = 128 oz
E. 3 x 32 + 2 x 16 = 128 oz

8 0

3 years ago