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3 years ago

7. (5 + 4 – 2) х (-2) = ? А. 14 В. -22 с. -14 D.22

Mathematics

1 answer:

Talja [164]3 years ago

7 0

Step 1. (5+4-2)x(-2)
Step 2. (7)x(-2)
Step 3. -14

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The radius of a circle is 1 foot. What is the length of a 45 degree arc

Elodia [21]

Circumference = 2 x PI x r
circumference = 3.14 x 2 x 12 inches = 75.36 inches

45/360 = 0.125

75.36 * 0.125 = 9.42 inches

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3 years ago

Round 342.79513 to the three significant figures

Pavel [41]

Answer:

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Step-by-step explanation:

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342.8

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2 years ago

Mr. Jackson filled up his 15-gallon gas tank for $37.50. What was the price 10

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Answer:

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3 years ago

Read 2 more answers

If you are solving y 2+2y=48 by completing the square, the next line would be

snow_tiger [21]

For this case we have the following equation:

$y ^ 2 + 2y = 48$

By completing squares we have:

Step 1:

Add $(\frac {b} {2}) ^ 2$ on both sides:

$y ^ 2 + 2y + 1 = 48 + 1$

Step 2:

We rewrite the equation:

$(y + 1) ^ 2 = 49$

Step 3:

We solve the equation:

$y = \pm \sqrt {49} -1\\y = \pm7-1$

Solutions:

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Answer:

the next line would be:

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3 years ago

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Select the correct answer from the drop-down menu.

ELEN [110]

Missing term = –2xy

Solution:

Let us first find the quotient of $-8x^2y^3 \div xy$ .

$-8x^2y^3 \div xy=\frac{-8x^2y^3 }{xy}$

$=\frac{-8\times x\times x\times y\times y\times y}{xy}$

Taking common term xy outside in the numerator.

$=\frac{xy(-8\times x\times y\times y)}{xy}$

Both xy in the numerator and denominator are cancelled.

$=-8xy^2$

Thus, the quotient of $-8x^2y^3 \div xy$ is $-8xy^2$ .

Given the quotient of $-8x^2y^3 \div xy$ is same as the product of 4xy and ____.

$-8xy^2=4xy$ × missing term

Divide both sides by 4xy, we get

⇒ missing term = $\frac{-8xy^2}{4xy}$

Cancel the common terms in both numerator and denominator.

⇒ missing term = –2xy

Hence the missing term of the product is –2xy.

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3 years ago