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VikaD [51]
3 years ago
6

Which of the following number sentences is true?

Mathematics
2 answers:
Levart [38]3 years ago
8 0
D, a double negative is always a positive
Dimas [21]3 years ago
3 0
D because a negative - becomes a positive when multiplied or divided by another negative
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50 apples cost $25. How much would 75 apples cost?​
iren [92.7K]

Answer:

$37.50

Step-by-step explanation:

If 50 apples cost $25 to find the cost of 1 apple, we divide the total cost by the total number of items. In this case, we do 25/50.

One apple costs 0.50. If we need 75 apples then we simply multiply 0.50 by 75 which gets us 37.50.

8 0
3 years ago
For what values of m does the graph of y = 3x2 + 7x + m have two x-intercepts
Irina18 [472]

we are given

y=3x^2+7x+m

To find x-intercept means we have to find zeros

and for finding zeros , we will use quadratic formula

and we have it has two x-intercepts

so, it's discriminant must be greater than 0

so, we will find discriminant

D=\sqrt{b^2-4ac}

now, we can compare with

y=ax^2+bx+c

y=3x^2+7x+m

and then we can find a , b and c

a=3,b=7,c=m

now, we can find D

D=\sqrt{7^2-4*3*m}

D=\sqrt{49-12m}

It has two x-intercepts

so,

D=\sqrt{49-12m}>0

now, we can solve for m

49-12m>0

12m

m............Answer

8 0
3 years ago
Read 2 more answers
Which expression has a value greater than 43 ?<br><br> PLEASEEE HELP!
lozanna [386]

Answer:

7^2

Step-by-step explanation:

7*7=49

4^3=43

49>43

8 0
3 years ago
Solving system by substitution x=3y+11, 2x-3y=16
grin007 [14]
Input 3y+11 for x

2(3y+11)-3y=16
6y+22-3y=16
3y= -6
Divide by 3 to isolate y
y=-2

Now for x....

x=3(-2)+11
=-6+11
=5
x=5

Coordinates (5,-2)
5 0
3 years ago
Read 2 more answers
A. Integer<br><br> B. Rational Number<br><br> C. Natural Number <br><br> D. Irrational Number
Paladinen [302]

Answer:

b

Step-by-step explanation:

b b b b b b b b b b b b b b b b b b b b b b b b

8 0
3 years ago
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