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KIM [24]
3 years ago
9

Select all the TRUE sentences!!!

Mathematics
2 answers:
mylen [45]3 years ago
4 0

Answer:

The last two.

Step-by-step explanation:

Arlecino [84]3 years ago
4 0

Answer:

A and C

Step-by-step explanation:

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Reduce 7y + 2y2 - 7 by 3 - 4y.
Liula [17]

Step-by-step explanation:

Reduce = Deduct = Subtract

7y + 2y^2 - 7 - (3 - 4y)

distribute the negative sign outside 3-4y.

7y+2y^2-7 - 3 + 4y

collect like terms, meaning try to make similar components of the equation together at one place.

7y & 4y are like terms in this case.

7y + 4y + 2y^2 - 7 - 3

11y + 2y^2 - 10

rewrite 2y^2 infront of the equation because it has the highest degree which is 2.

2y^2 + 11y - 10

8 0
3 years ago
How do you solve this problem? Emma and Anna went to the market to buy 25 fruits. Emma got a few apples that cost $2 each, and A
sp2606 [1]

Anna bought 10 oranges

Explanation:

Let x denote the number of apples.

Let y denote the number of oranges.

The system of equations can be written as

x+y=25 and 2x+3y=60

Let us solve the equation by substitution method.

Thus, from x+y=25, the value of y can be determined such that y=25-x

Using the y value y=25-x in the equation 2x+3y=60, we get,

2x+3(25-x)=60

Multiplying 3 within the bracket,

2x+75-3x=60

Adding the terms,

75-x=60

Subtracting both sides by 75, we have,

x=15

Thus, substituting x=15 in y=25-x, we get,

y=25-15\\y=10

Thus, Anna get 10 Oranges.

7 0
4 years ago
Can someone help me with my quadratics and equations questions? I need to show my work :)
Dvinal [7]
Y = x^2 +2x
y = 3x +20

so: 
x^2 + 2x = 3x + 20

subtract 3x from both side:

x^2 +2x -3x = 20

combine like terms:
x^2 -x = 20

subtract 20 from each side:
x^2 -x -20 = 0

factor the polynomial:

(x-5) (x+4) = 0

solve for x
x = 5 and x = -4  ( 5-5 = 0 and -4 +4 = 0 )

replace x = 5 in 2nd equation:  y = 3(5) +20 
y = 15 +20 
y = 35

replace x with -4 in same equation:
y = 3(-4) +20
y = -12 +20
y = 8
 so solution is (5,35) and (-4,8)

6 0
3 years ago
The perimeter of a rentangular is 60 the length is 16 feet what the width
Brrunno [24]
The width is 13 units
6 0
3 years ago
Read 2 more answers
Sierra started with savings of $260 and adds $8 of her savings every week. Brian started with savings of $650 and spends $5 of h
andreev551 [17]

340 + 5x = 650 - 8x hope this helps

6 0
3 years ago
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