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3 years ago

14

To make concrete Tyler mixes 55 kilograms of gravel wit 11 kilograms of cement how many kilograms of gravel does Tyler need for

each kilogram of cement

1 answer:

tia_tia [17]3 years ago

7 0

Answer:

5 kilos

Step-by-step explanation:

55:11

5:1 ratio

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CL 1-148. The county-fair prize wheel has equally spaced sections with the following colors:

Nina [5.8K]

Answer:

A. $\dfrac{1}{25}=0.04$ or 4%

B. $\dfrac{16}{25}=0.64$ or 64%

C. 8 times

Step-by-step explanation:

The county-fair prize wheel has equally spaced sections with the following colors: 1 is golden, 2 are silver, 3 are green, 4 are blue, 6 are red, and 9 are yellow, 25 sections in total.

A. The probability of landing on gold is

$P_1=\dfrac{\text{Number of favorable outcomes}}{\text{Number of all possible outcomes}}=\dfrac{1}{25}=0.04$

or 4% as a percent.

B. If the probability of landing on yellow is 36% (or 0.36 as decimal), then the probability of not landing on yellow is

$P_2=1-0.36=0.64$

or 64% as a percent.

C. If the wheel is spun 1 time, the probabilty of landing on silver is

$P_3=\dfrac{2}{25}=0.08$

or 8% as a percent.

If the wheel is spun 100 times, the expected number of landing on silver is

$100\cdot 0.08=8$

4 0

3 years ago

Marcus spent 10 hours doing his homework last week. This week he spent 11 hours doing homework. He says that he spent 110% more

8_murik_8 [283]

No he did not spend 110% more time doing homework if he did it would be 12hrs to find this put 11 in its decimal form and multiply it by 110 =12.1

3 0

3 years ago

What is the answer to this question?

goldenfox [79]

Answer:

the answer is the top right option

Step-by-step explanation:

7 0

3 years ago

What is the area of the figure?<br> Enter your answer in the box.<br> in2

Dafna1 [17]

110^in2 is what I got

7 0

3 years ago

Find the point P on the line yequals=33x that is closest to the point (60 comma 0 )(60,0). What is the least distance between P

scoray [572]

Answer:

$18\sqrt{10}$ units$

Step-by-step explanation:

We are given the equation of the line y=3x and a point, say Q(60,0) outside of that line.

We want to find the point on the line y=3x which is closest to Q.

Let P(x,y) be the desired point. Since it is on the line y=3x, it must satisfy the line.

If x=a, y=3a, so the point P has the coordinates (a,3a).

Distance between point Q and P

$=\sqrt{(60-a)^2+(0-3a)^2}\\D =\sqrt{10a^2-120a+3600}$

To minimize D, we find its derivative

$\dfrac{dD}{da}=\dfrac{10a-60}{\sqrt{10a^2-120a+3600} }\\$Setting \dfrac{dD}{da}=0\\10a-60=0\\10a=60\\a=6$

Therefore, the y-coordinate for P is 3*6=18.

The point P=(6,18).

Next, we calculate the distance between P(6,18) and (60,0).

$D =\sqrt{10(6)^2-120(6)+3600}\\=\sqrt{3240}\\=18\sqrt{10}$ units$

8 0

4 years ago