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Gelneren [198K]
3 years ago
6

Pls help me with these 2 math question will mark brainiest.

Mathematics
2 answers:
nika2105 [10]3 years ago
8 0

Answer:

3) B

4) A

Step-by-step explanation:

3)

<u>Formula</u>: y = mx + b

<u>Slope</u>: \frac{-3 - 1}{-4 - (-2)} =2

<em>Next, I substituted the numbers from both the chart and the slope.</em>

y=2x+b

(x, y) --> (1, 7)

\\7=2(1)+b\\

7=2+b

b=5\\

<em>Your final equation should be, </em>y=2x+5.

4)

<em>From the graph you can see (0, 4) is the y-intercept and the spaces are moving up twice and once to the right, making the slope 2. </em>

<em>Your answer should be, </em>y=2x+4.

zalisa [80]3 years ago
6 0
I’m not sure what the first one is, but number 4 is A) y=2x+4
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Answer:

$7803.72

Step-by-step explanation:

We have been given that a silo is in the shape of a cone. The silo is 8 meters tall and it's base has a diameter of 3 meters. Soybeans cost $414 per cubic meter. We are asked to find the total cost to fill the silo with soybeans.

First of all, we will find the volume of silo using volume of cone formula.

\text{Volume of cone}=\frac{1}{3}\pi r^2 h, where,

r = radius

h = Height

We know that radius is half the diameter, so radius of silo would be r=\frac{3}{2}=1.5.

\text{Volume of cone}=\frac{1}{3}\pi (1.5\text{ m})^2 (8)\text{ m}

\text{Volume of cone}=\frac{1}{3}\pi\times 2.25\text{ m}^2 (8)\text{ m}

\text{Volume of cone}=\pi\times 0.75\text{ m}^2 (8)\text{ m}

\text{Volume of cone}=\pi\times 6\text{ m}^3

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5 0
3 years ago
GIVING OUT BRAINLIEST!! All sacks of sugar have the same weight. All sacks of flour also have the same weight, but not necessari
Vsevolod [243]

Answer:

flour = 11.5, sugar has to be equal to 2.75 pounds.

Step-by-step explanation:

your 2 inequalities are:

2x + 3y <= 40

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solve the equality portion of these 2 inequalities.

those are the following equations:

2x + 3y = 40

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y = 11.5

that appears to be a break even point.

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2x + 3y <= 40

replace y with 11.5 and the inequality becomes:

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when y = 11.5, the second inequality is solved as follows:

-2x + y <= 6

replace y with 11.5 and the inequality becomes:

-2x + 11.5 <= 6

solve for x to get x >= 2.75

this indicates that, when y = 11.5, x has to be equal to 2.75.

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Answer:

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