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Nataly [62]
3 years ago
13

What is 2+5-71=I need help with that

Mathematics
1 answer:
Alex787 [66]3 years ago
6 0
2+5-71
7-71
-64
answer is -64
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Please help, I don’t know how to do this. Use a compass and straightedge to construct a line perpendicular to the given through
Tasya [4]

Step-by-step explanation: B

put the center of the circle on the right of the line and the edge of the circle on the p. Make part of a circle. you dont have to do the whole circle, but you can if you want.

do the same thing again but on the other side of the line.

now it should look like the first image i included (if you didnt do the whole circle)

now take your straightedge/ruler/line maker and make it go through the intersecting points on the circles, like the second image.

Note that my images are for demonstration. They're not perfect at all, they're just to show you how to do it.

5 0
3 years ago
What is the distance between the solutions to the quadratic<br> equation x2 – 7x + 10 = 28
Kryger [21]

Answer:

11

Step-by-step explanation:

Given

x² - 7x + 10 = 28 ( subtract 28 from both sides )

x² - 7x - 18 = 0 ← in standard form

(x - 9)(x + 2) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 9 = 0 ⇒ x = 9

x + 2 = 0 ⇒ x = - 2

The distance between the solutions is

| 9 - (- 2) | = | 11  = 11 units

4 0
3 years ago
.<br>can someonee<br> help me as soon as possible​
Nezavi [6.7K]

Answer:

y=8

x=20

Step-by-step explanation:

8y+6=70

5x-10=90

because(language persian or farsi)

چون که شکل متوازی الاضلاع است پس دو زاویه مجاور مکمل هستند

همچنین چون feوgh دو خط موازی هستند xhg میشود 70 درجه

7 0
3 years ago
Melissa wants to purchase a digital camera.The listed price of the camera is $195.99.The camera is no sale for 10% off and Melis
lianna [129]

Answer:

The 10% off sale will save Melissa <u>$10.49</u>.

Step-by-step explanation:

Given:

The listed price of the camera is $195.99.

The camera is no sale for 10% off and Melissa has a coupon for 5% off the sales tax is 7%.

Now, to find the money Melissa will save of the 10% off sale.

So, to get the price of camera of the 5% off sale:

(195.99-5\%\ of\ 195.99)

=(195.99-\frac{5}{100}\times 195.99)

=(195.99-9.80)

=186.19

Now, adding the sales tax:

186.19+7\%\ of\ 186.19

=186.19+\frac{7}{100} \times 186.19

=186.19+13.03

=199.22

Thus, the price is $199.22.

Now, to get the price of 10% off sale:

195.99-10\%\ of\ 195.99

=195.99-\frac{10}{100} \times 195.99

=176.39

So, adding sales tax:

176.39+7\%\ of\ 176.39

=176.39+\frac{7}{100} \times 176.39

=188.73

Hence, the price is $188.73.

Now, to get the money 10% off sale will save Melissa:

199.22-188.73

=10.49

Therefore, the 10% off sale will save Melissa $10.49.

7 0
3 years ago
The square root of 42. The answer needs to be simplified. The problem must be solved by using perfect squares. The answer can't
Rasek [7]
From what I can tell, this can't be simplified, because there are no factors of 42 that are perfect squares.  I would leave it as the square root of 42.
5 0
3 years ago
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