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RoseWind [281]
3 years ago
15

E price of a large pizza increased from $21 to $26. what is the percent of increase in the cost of pizza? round to the nearest p

ercent, if necessary.
I really need help on this one! I keep getting it wrong!
Mathematics
1 answer:
rodikova [14]3 years ago
7 0
Percent increase=increase/original times 100

increase=26-21=5
original=21

so
5/21 times 100=0.23809523809523809523809523809524 times 100=23.809523809523809523809523809524
round
24%

so 24% increase

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What is the product of (x − 7)(2x² – 5x<br> -<br> 3<br> + 3)?
butalik [34]

Answer:

2x³-5x-14x²+35

Step-by-step explanation:

this is the simplified version/answer

3 0
1 year ago
You have a grade of 85 &amp; 90
faltersainse [42]

Answer:

You need to get a 95 on the next test to have a 90 grade average.

Step-by-step explanation:

(85 + 90 + n)/3 = 90

<u>Step 1:  Multiply both sides by 3</u>

(85 + 90 + n)/3 * 3 = 90 * 3

85 + 90 + n = 270

<u>Step 2:  Subtract 85 from both sides</u>

85 + 90 + n - 85 = 270 - 85

90 + n - 90 = 185 - 90

n = 95

Answer:  You need to get a 95 on the next test to have a 90 grade average.

7 0
3 years ago
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Please help me 100 points and brainliest <br> Which net represents this solid figure?
Contact [7]

The one you picked, on the bottom left is correct

The top two both have rectangles and triangles, making them most likely triangular prisms. To the bottom right, the net represents a cube, which is incorrect, because the figure is supposed to be a rectangular prism.

7 0
2 years ago
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800+900×25-65(89+5)-12÷67-7​
vlada-n [284]

Answer:

As there is Bracket lats solve it first but as there is '-' sign before the bracket sign in the bracket will change. so we will have,

'800+900×25-65(89-5)-12÷67-7'

Solving the bracket gives us:

'800+900×25-65(84)-12÷67-7'

Now avoiding the Bracket:

'800+900×25-5460-12÷67-7'

Now first we have to do MUltiplication, so we will get,

'800+22500-5460-12÷67-7'

Now let's do the division, so we will get,

'800+22500-5460-0.17-7'

Now lets do the additions and subtractions we will get,

<h2><u>17,832.83</u></h2>
4 0
2 years ago
Refer to the accompanying TI-83/84 Plus calculator display of a 95% confidence interval. The sample display results from using a
nikklg [1K]

Answer:

The confidence interval is 22.805

Step-by-step explanation:

We have given,

The Z interval (23.305,25.075)  

Mean \bar{x}=23.69

Sample n=30

To find : The confidence interval?

Solution :

We know, The confidence interval is in the format of

\bar{x}-E

E denotes the margin of error,

E=\frac{U-L}{2}

Where, U is the upper limit U=25.075

L is the lower limit L=23.305

E=\frac{25.075-23.305}{2}

E=\frac{1.77}{2}

E=0.885

Substitute the value of E and \bar{x} in the formula,

23.69-0.885

22.805

Therefore, The confidence interval is 22.805

8 0
3 years ago
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