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3 years ago

The ratio of red marbles to blue marbles is 7:4.what is the total no of marbles

Mathematics

1 answer:

7nadin3 [17]3 years ago

5 0

Answer:

its 11

Step-by-step explanation:

$\frac{7}{1} + \frac{4}{1} = \frac{11}{1} \\ = 11$

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There are 20 percent more goblins than wizards in magic club. There are 120 goblins in magic club.

sineoko [7]

Answer:

144

Step-by-step explanation:

120 x 1.20 = 144

.20 is 20% and adding the 1 adds it to the original value

5 0

2 years ago

Describe all the positive integers that would make [(1/2|4] less than (1/2)7

Zielflug [23.3K]

Answer:

The only positive integers would be anything less than 3. So 1 or 2 would work

Step-by-step explanation:

If something that is already being raised to a power, gets raised to another power, those powers add up. So if it were $(\frac{1}{2} ^{2} )^{2}$ , the exponents would add which would make it $(\frac{1}{2}^{4} )$ .

In the case of your question, if 'n' was 2 it would be to the power of 6 making it less than to the power of. 1 could also work

5 0

1 year ago

If f(x) = 5x + 40, what is f(x) when x = -5? 0 -9 O-8 07 0 15

gogolik [260]

Good morning ☕️

______

Answer:

___________________

Step-by-step explanation:

f(x) = 5x + 40

then

f(-5) = 5(-5) + 40

= -25 + 40

= 40-25

= 15.

3 0

3 years ago

If a cylinder with height 9 inches and radius rr is filled with water, it can fill a certain pitcher. How many of these pitchers

katrin2010 [14]

Answer:

9 pitchers

Step-by-step explanation:

Given

Cylinder 1:

$Radius = r$

$Height = 9$

Cylinder 2:

$Radius = 3r$

$Height = 9$

Required

How many pitchers' cylinder 2 can fill

First, we calculate the volume of both cylinders

Volume is calculated as:

$Volume = \pi r^2h$

For A:

$V_A = \pi r^2*9$

$V_A = 9\pi r^2$

For B:

$V_B = \pi (3r)^2 * 9$

$V_B = \pi *9r^2 * 9$

$V_B = 9* 9\pi r^2$

In (a): $V_A = 9\pi r^2$

So, we have ve:

$V_B = 9*V_A$

$V_B = 9V_A$

If the first cylinder can fill 1, then the second can fill 9 pitchers

7 0

3 years ago

Keith bought a bag of parsnips that weighed 5 pounds. he also bought a bad of turnips that weighed 2 1/2 times as much as the pa

Illusion [34]

Answer:

5 x 2 1/2

5/1 x 5/2 = 25/2

5 0

2 years ago