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3 years ago

Please decrease 90 by 20%

Mathematics

1 answer:

Mashcka [7]3 years ago

4 0

Answer:

Step-by-step explanation:

90 by 20%

10%=9

20%=18

90-18=62

Hope u understand

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BRAINLIEST FOR AN ACTUAL ANSWER

Andreyy89

Answer:

The correct pair of functions is the third one: h(x)=(x−24)^2 and g(x)=x2

Step-by-step explanation:

Example: If we have q(x) = x^2 and its graph, moving the vertex of this graph 24 units to the right results in r(x) = (x - 24)^2.

The correct pair of functions is the third one: h(x)=(x−24)^2 and g(x)=x2

Note: the fourth pair is incorrect, because the " + " sign moves the graph of x^2 24 units to the left.

3 0

3 years ago

In preparing a certain ointment, a pharmacist used 28.35 g of zinc oxide instead of the 31.1 g called for. Calculate the percent

Vilka [71]

Answer: 9.70%

Step-by-step explanation:

The formula to find the percentage error is given by :-

$\%\text{ error}=\dfrac{|\text{Estimate-Actual}|}{\text{Actual}}\times100$

Given : Actual mass of zinc oxide used by pharmacist = 28.35 g

Estimated mass of zinc oxide used by pharmacist =31.1 g

Now, $\%\text{ error}=\dfrac{|31.1-28.35|}{28.35}\times100$

i.e. $\%\text{ error}=\dfrac{2.75}{28.35}\times100$

i.e. $\%\text{ error}=9.70017636684\approx9.70\%$

Hence, the percentage of error on the basis of the desired quantity.= 9.70%

5 0

3 years ago

Estimate the sum of 487 and 310

Ronch [10]

487 + 310 ≈ 500 + 300 ≈ 800

3 0

3 years ago

Read 2 more answers

What is the range of the data set below?<br><br> 56, 42, 48, 32, 17, 26, 92

Digiron [165]

Answer:

edit: 92-17=75

Step-by-step explanation:

when using range you subtract the highest number with the lowest

3 0

3 years ago

A line passes through the points (-1,-1) and (5,8) which points lie on the same line?

djverab [1.8K]

Answer: all points $(x,y)$ that satisfy $y=\frac{3}{2}x+\frac{1}{2}$

Step-by-step explanation:

The slope of the line is

$\frac{-1-8}{-1-5}=\frac{-9}{-6}=\frac{3}{2}$

So, substituting into point-slope form, the equation is

$y+1=\frac{3}{2}(x+1)\\\\y+1=\frac{3}{2}x+\frac{3}{2}\\\\y=\frac{3}{2}x+\frac{1}{2}$

Therefore, all points $(x,y)$ that satisfy $y=\frac{3}{2}x+\frac{1}{2}$ will lie on the same line.

7 0

2 years ago