Irene wants to list the factors for 88. She writes 2,4,8,11,22,44,and 88. Is Irene correct? Explain

kirill115 [55]

Answer:

Step-by-step explanation:

The graph certainly is, if you ignore the fact that you don't know what the equation for the graph is.

Each x has only 1 y associated with it. That's the definition of a function. This one presumably follows that definition, but I caughten you, without the equation, you can't be sure.

7 0

2 years ago

TIMING THE CAR

kenny6666 [7]

We can define the speed as the quotient between the distance moved, and the time it takes to move that distance, so we have:

speed = Distance/Time.

Now we can rewrite this as:

Distance = Speed*Time.

We will find that the speed of the car was 21 mi/h.

Here the information given is:

Mr. Pipkins speed is: S = 3.5 mi/h

The car needed 27 "steps" to reach the corner.

Mr. Pipkins needed 27 + 135 = 162 "steps" to reach the same corner.

Because the number of steps is related to time and distance, the ratio between the number of steps should be the same as the ratio between the speeds:

162/27 = 6

(Pipkins needed 6 tomes more steps than the car, so the car moves 6 times faster than Pipkins)

This means that the speed of the car is 6 times larger than the speed of Mr. Pipkins.

Then the speed of the car is:

S' = 6*(3.5 mi/h) = 21 mi/h.

If you want to learn more, you can read:

brainly.com/question/24594539

3 0

3 years ago

Solve the following inequality for m. Write your answer in simplest form. - 7 + 5(9m – 7) < 9m - 2 - 9 m < - 2 Submit Answ

Lubov Fominskaja [6]

Answer:

m < $\frac{36}{31}$

Rearrange:

Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :

-7+5*(9*m-7)-(9*m-2-9)<0

Step by step solution :

STEP 1

:

Equation at the end of step 1

(-7 + 5 • (9m - 7)) - (9m - 11) < 0

STEP 2

:

Equation at the end of step 2

36m - 31 < 0

STEP 3:

3.1 Divide both sides by 36

m-(31/36) < 0

Solve Basic Inequality :

3.2 Add 31/36 to both sides

m < $\frac{31}{36}$

3 0

3 years ago

PLSS HELP ME I NEED IT ASAPP TYSM ILY

Hatshy [7]

Answers:

He needs 310 grams of the 99% cocoa brand
He needs 590 grams of the 70% cocoa brand

======================================================

Explanation:

Let's label the two brands of chocolate as A and B

Brand A is 99% cocoa
Brand B is 70% cocoa

Furthermore, define these variables

x = amount of brand A
y = amount of brand B

The amounts are in grams.

The two amounts must add to 900 grams, so x+y = 900. This can be solved to y = 900-x which we'll use later.

Since we have x grams of brand A, and brand A has 99% cocoa, this means 0.99x represents the amount of pure cocoa from brand A.

Similarly, brand B contributes another 0.70y grams of pure cocoa

Overall, we're dealing with 0.99x+0.70y grams of pure cocoa from the two brands mixed together.

---------------

Rolf needs 900 grams of final product. He wants it to be 80% cocoa, which means 80% of the 900 is going to be pure cocoa

80% of 900 = 0.80*900 = 720

Rolf wants 720 grams of pure cocoa after mixing the two brands together.

So this leads to the second equation: 0.99x+0.70y = 720

---------------

Let's apply substitution to replace y with 900-x

0.99x+0.70y = 720

0.99x+0.70( y ) = 720

0.99x + 0.70( 900-x ) = 720

At this point, we have a single variable in which we can isolate x fully.

0.99x + 0.70( 900-x ) = 720

0.99x + 0.70( 900) + 0.70(-x) = 720

0.99x + 630 - 0.70x = 720

0.29x = 720-630

0.29x = 90

x = 90/(0.29)

x = 310.344827586 which is approximate

Rounding to the nearest full gram, we get x = 310

Use this x value to find y

y = 900-x

y = 900-310.344827586

y = 589.655172414 which is also approximate

y = 590 when rounding to the nearest whole number

---------------

In summary, we have

x = 310
y = 590

Meaning that Rolf will need 310 grams of brand A to mix with 590 grams of brand B.

If we plugged those values into x+y = 900, then that equation works out.

If we tried the second equation, then,

0.99x+0.70y = 720

0.99*310+0.70*590 = 720

719.9 = 720

The slight discrepancy is due to the fact we rounded those approximate x and y values to the nearest whole number. We would get better accuracy if we rounded to say the nearest tenth or hundredth.

8 0

2 years ago

A quality inspector must verify whether a machine that packages snack foods is working correctly. The inspector will randomly se

Zina [86]

Answer: 52

Step-by-step explanation:

Formula for sample size:-

$n= (\dfrac{z_{\alpha/2\cdot \sigma}}{E})^2$