3 years ago

PLEASE HELP ASAP!

Mathematics

2 answers:

valentinak56 [21]3 years ago

3 0

C is the answer to it

8090 [49]3 years ago

3 0

C, because a slope be curved or straight .

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Subtract 7x^2−5xy+8y^2 from −2x^2−15xy+9y^2

Ghella [55]

Answer:

$y^2-10xy-9x^2$

Step-by-step explanation:

We want to subtract $7x^2 -5xy+8y^2$ from $-2x^2-15xy+9y^2$ .

We set up the subtraction problem as follows:

$(-2x^2-15xy+9y^2)-(7x^2-5xy+8y^2)$ .

We expand the brackets to obtain;

$=-2x^2-15xy+9y^2-7x^2+5xy-8y^2$ .

We regroup the terms to obtain;

$=9y^2-8y^2-15xy+5xy-2x^2-7x^2$ .

We now simplify to obtain;

$=y^2-10xy-9x^2$ .

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3 years ago

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vladimir1956 [14]

Answer:

x= -7 / 6

Step-by-step explanation:

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3 years ago

Bonnie has twice as many cousins as Robert.George has 5 cousins, which is 11 less than bonnie has.how many cousins does robert h

Rzqust [24]

Answer:9

Step-by-step explanation:

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3 years ago

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P=q+3e make e the subject of the formula

andreev551 [17]

Answer: e = (p-q)/3

Step-by-step explanation:

p = q + 3e

Subtract q from both sides.

p - q = q + 3e - q

p - q = 3e

Divide both side by 3 which is the coefficient of e.

3e/3 = (p - q)/3

e = (p-q)/3

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3 years ago

Find the value of the variable if P is between J & K. <br><br> JP = 2x ; PK = 7x ; JK = 27

Nana76 [90]

J ---- P --- K

JP = 2x
PK = 7x
JK = 27

2x + 7x = 27
9x = 27
x = 27/9
x = 3

The value of P is 3.

JP = 2x = 2(3) = 6
PK = 7x = 7(3) = 21

7 0

3 years ago