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lbvjy [14]
3 years ago
9

Selma wants to know if seventh grade students prefer to do their math homework in silence or with background music. She polled

Mathematics
1 answer:
ivolga24 [154]3 years ago
8 0

Answer:

it is C

Step-by-step explanation:

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Leah has a collection of 36 baseball cards. She..
Evgesh-ka [11]

Answer:

She gave away 24 cards

Step-by-step explanation:

(36)*(\frac{2}{3})=24

8 0
3 years ago
Approximately what percentage of iq scores falls between 70 and 130?
ohaa [14]
About 95% of scores fall in this range
5 0
3 years ago
The base of a solid is bounded by the curve y = sqrt (x+1) the x-axis and the line x = 1. the cross sections, taken perpendicula
Andrei [34K]

See attached for a sketch of some of the cross sections.

Each cross section has area equal to the square of the side length, which in turn is the vertical distance between the curve y = √(x + 1) and the x-axis (i.e. the distance between them that is parallel to the y-axis). This distance will be √(x + 1).

If the thickness of each cross section is ∆x, then the volume of each cross section is

∆V = (√(x + 1))² ∆x = (x + 1) ∆x

As we let ∆x approach 0 and take infinitely many such cross sections, the total volume of the solid is given by the definite integral,

\displaystyle \int_{-1}^1 (x+1) \, dx = \left(\frac{x^2}2 + x\right) \bigg|_{-1}^1 = \boxed{2} ~~~~ (B)

3 0
2 years ago
Which situation is best represented by the equation? 35p + 129.50 = 479.50
Ksivusya [100]

Answer:

A

Step-by-step explanation:

this is because we don't know how many trainers she goes to, so the cost will be 35p. and then include the registration fees she pays.

5 0
3 years ago
A company makes electronic gadgets. One out of every 50 gadgets is faulty, but the company doesn't know which ones are faulty un
Talja [164]

Answer:

Yes, the company can expect a profit in the long term

Step-by-step explanation:

In this question, we are to project if a company is expected to make a profit or loss given the information in the question.

Let’s use the scenario of 50 gadgets produced.

1 is expected to be faulty, while 49 is thus expected to work perfectly.

Now, on this 49 sold, there is an expectancy of $3 profit. Hence, this means that for a batch of 50 gadgets produced, the amount of expected profit will be 49 * 3 = $147

The amount that would be used to repair the faulty unit is $80. If we subtract this from the total expected profit, we have $147-$80 = $67

Hence, per 50 gadgets sold, a total of $67 in profit is to be expected

This means profit is expected in the long tey

6 0
3 years ago
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