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3 years ago

Hey, please help me, I'm fairly confused with this question.

Mathematics

1 answer:

Sati [7]3 years ago

5 0

Answer:

10 times.

Step-by-step explanation:

The number in the tenths place is 90. The number in the ones place is 9. 9 times 10 is 90.

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Mrs. JOHNSON paid $40.68 for 3kg of shrimp. What’s the cost of 1 kilogram of shrimp?

Goshia [24]

Answer:

It is 13.56

Step-by-step explanation:

You would have to divide 40.68 by 3. 3 goes 1 time into 4 so it is 10.

4 0

3 years ago

Read 2 more answers

Solve the simultaneous equations<br>8x – 3y = 30<br>3x + y = 7

hodyreva [135]

Solve for y in 3x+7=y

y=7−3x

Substitute y=7−3x

y=7−3x into 8x−3y=30

8x−3y=30.

17x−21=30

Solve for x

x in 17x−21=30

17x−21=30.

X=3

Substitute x=3 into y=7−3x

y=-2

Therefore,

x=3

y=−2

6 0

3 years ago

A company sells widgets. The amount of profit, y, made by the

vfiekz [6]

Answer:

846.06 units

Step-by-step explanation:

The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the given equation as follows :

$y = -4x^2 + 183x- 1247$ ...(1)

We need to find out the maximum amount of profit the company can make.

For maximum profit put dy/dx = 0

So,

$\dfrac{d}{dx}(-4x^2 + 183x- 1247)=0\\\\-8x+183=0\\\\x=\dfrac{183}{8}\\\\x=22.87$

Put x = 22.87 in equation (1). So,

$y = -4(22.87)^2 + 183(22.87)- 1247\\\\=846.06$

So, the maximum profit is 846.06 units.

4 0

3 years ago

What are the side lengths of a rectangle that has 8 square units and a perimeter of 12 units

telo118 [61]

The longest two sides will be 4 each and the shortest two sides will be 2 each

3 0

4 years ago

Graph y=2x+4 how do i solve this i really need help

chubhunter [2.5K]

Y-int (0,4) because y=Mx+b, b is y-int
Slope is 2 means that the pattern of the graph is 2/1 up 2 over 1

3 0

3 years ago