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3 years ago

FIRST PERSON TO ANSWER CORRECTLY GETS BRAINLIEST! MORE THAN ONE OPTION

Mathematics

2 answers:

schepotkina [342]3 years ago

8 0

Answer:

Left, open circle

Step-by-step explanation:

The graph will have an open circle, because it does not include 5 as part of the solution. The graph will only have a closed circle if the inequality sign is: $\leq or\geq$ . Since the sign is <, it is an open circle.

The ray of the graph will move to the left, because the solution is everything less than 5. 4,3,2, 1... are all to the left of 5 on a number line, so that is the direction the ray will point.

dexar [7]3 years ago

4 0

The tay would move to the left because that is a less than sign . positive goes to the right and negative goes to the left . thing of the less sign like a L bc it looks like one .

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Complete the statements about these similar pyramids.

Goryan [66]

The ratio of the heights of the pyramid given at the end of the answer is of: 1:3.

The ratio of the surface areas of the pyramid given at the end of the answer is of: 1:9.

The ratio of the volumes of the pyramid given at the end of the answer is of: 1:27.

<h3>How to obtain the ratios?</h3>

The first step in obtaining the ratios is finding the ratio of the heights, which is given as follows:

5:15 = 1:3.

The heights are measured in units, while the surface area is measured in units squared, hence the ratio is squared, as follows:

(1:3)² = 1:9.

The volume is measured in cubic units, hence the ratio is cubed, as follows:

(1:3)³ = 1:27.

<h3>Missing Information</h3>

The pyramid is given at the end of the answer.

For different dimensions, the procedure of taking the ratio of the heights, then the surface area is squared and the volume is cubed remains.

More can be learned about ratios of area and volume at brainly.com/question/15990299

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1 year ago

Solve equations for this word problem

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Not enough information... how much area did the student paint in 8 hours?

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3 years ago

X2=36 what dose this mean

Rashid [163]

It means you have to find what number equals 36 but multiplying with 2

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4 years ago

Read 2 more answers

The Pacific halibut fishery has been modeled by the differential equation dy dt = ky 1 − y K where y(t) is the biomass (the tota

Dafna1 [17]

Answer:

a. The biomass weighs 2.30 * 10^7 kg after a year

b. It'll take 2.56 years to get to 4*10^7kg

Step-by-step explanation:

k = 0.78,K = 6E7 kg

Given

dy/dt = ky(1- y/K)

Make ky dt the subject of formula

ky dt = dy/(1-y/K) --- make k dt the subject of formula

k dt = dy/(y(1-y/K))

k dt = K dy / y(K-y)

k dt = ((1/y) + (1/(K-y)))dy ---- integrate both sides

kt + c = ln(y/(K-y))

Ce^(kt) = y/(K-y)

Substitute the values of k and K

Ce^(0.78t) = y/(6*10^7 - y) ----- (1)

Given that y(0) = 2 * 10^7kg

(1) becomes

Ce^(0.78*0) = (2 * 10^7)/(6*10^7 - 2*10^7)

Ce° = (2*10^7)/(4*10^7

C = 2/7

Substitute 2/7 for C in (1)

2/7e^0.78t = y/(6*10^7 - y) ---(2)

We're to find the biomass a year later

So, t = 1

2/7e^0.78 = y/(6*10^7 - y)

0.62 = y/(6*10^7 - y)

y = 0.62(6*10^7 - y)

y = 0.62*6*10^7 - 0.62y

y + 0.62y = 0.62*6*10^7

1.62y = 0.62*6*10^7

1.62y = 3.72 * 10^7

y = 2.30 * 10^7kg.

Hence, the biomass weighs 2.30 * 10^7 kg after a year

Here, we're to calculate the time it'll take the biomass to get to 4*10^7 kg

Substitute 4*10^7 for y in (2)

2/7e^0.78t = 4*10^7/(6*10^7 - 4*10^7)

2/7e^0.78t = 4*10^7/2*10^7

2/7e^0.78t = 2

e^0.78t = (2*7)/2

e^0.78t = 2

t = 2 * 1/0.78

t = 2.56 years

Hence, it'll take 2.56 years to get to 4*10^7kg

8 0

3 years ago

A group of 3 friends were going on a hike. One friend brought 0.75 lbs of trail mix, the second friend brought 1.3 lbs of trail

levacccp [35]

Answer:

0.8 pounds

Step-by-step explanation:

0.75 plus 1.3 plus 0.35 = 2.40 pounds

2.40 divided by 3 is 0.8 pounds

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4 years ago