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3 years ago

On a school trip, 4 adults are required to supervise a

Mathematics

2 answers:

lara31 [8.8K]3 years ago

8 0

Answer:

5 adults

Step-by-step explanation:

So 4 adults are taken for 32 children. We can use 32 divided by 4 to see how many children it takes to assign an adult. the answer to this would be 8. if 8 more children are added ( which would make 32+8 which is 40) than another adult would be needed.

Lilit [14]3 years ago

4 0

5 adults would be needed for 40 children

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You invest $50 in a government bond that says you can redeem it a year later for $54. Use the instructions in Lesson 3 to calcul

Afina-wow [57]

Invested amount in a government bond = $50.

Total returned amount after 1 year =$54.

We need to find the amount of interest earned first.

Amount of intrest earned in a year = Total returned amount after 1 year - Invested amount in the government bond.

Therefore, Amount of intrest earned in a year = $54 - $50.

= $4.

Therefore, earned interest is $4 in an year.

Now, we need to find the intrest rate.

We know the formula,

$Interest \ rate=\frac{Earned \ Interest}{Invested \ Money} \times 100$

Plugging values in above formula, we get

Rate of interest = $\frac{4}{50} \times100$

Dividing 100 by 50, we get 2.

$\frac{4}{50} \times100= 4\times2=8$

Therefore, Rate of Interest (ROI) = 8% per year.

3 0

4 years ago

Read 2 more answers

An ice cream factory makes 270 quarts of ice cream in 2 hours. How many quarts could be made in 48 hours. What was the rate per

Zanzabum

Answer:

6480 quarts in 48 hours

3240 quarts in a day(24 hours)

Step-by-step explanation:

2*24 is 48, so then 270*24=6480

and then half of 48 hours is a day so just half of 6480

7 0

4 years ago

Read 2 more answers

1. A magazine advertise its $12 annual subscription price 70% off the newsstand price. What is the number of dollars per year a

ollegr [7]

1. $17.14

12 represents 70%
x represents 100%

rule of three

Price Percentage
+12 70-
-x 100+

$x= \frac{12*100}{70} 
 \\ \\
x= \frac{12*10}{7} 
 \\ \\ x=17.14$

3 0

3 years ago

Factor

notka56 [123]

Answer:

the answer is C.(4x-3)(5x+1)

Step-by-step explanation:

7 0

3 years ago

A linear function has the same y-intercept as x +4y= 16 and its graph contains the point (3,5). Fill in the blank to find the y-

mart [117]

A linear function has the same y-intercept as x +4y= 16 and its graph contains the point (3,5). Fill in the blank to find the y-intercept.

To find the y intercept of x+4y=16, let us convert the equation to slope-intercept form, that is, y=mx+b

To get the equation in slope-intercept form, we try to isolate y

To isolate y in x+4y=16, let us first try to get rid of x from left side

So, Let us subtract x from both sides

x-x+4y=-x+16

0+4y=-x+16

Or, 4y=-x+16

Now, to isolate y we must try to get rid of 4

So, let us divide by 4 on both sides

$\frac{4}{4} y=\frac{-1}{4}x+\frac{16}{4}$

1y= $\frac{-1}{4} x+\frac{4}{1}$

y= $\frac{-1}{4}$ x+4

If we compare y= $\frac{-1}{4}$ x+4 to y=mx+b

b, or y intercept=4

6 0

3 years ago