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3 years ago

When will the sum of two numbers be zero

2 answers:

8 0

The sum of two numbers will be zero when you have the same number and one is positive and one is negative. For example 1 + -1= 0

Ad libitum [116K]3 years ago

6 0

The sum of two numbers will be zero when you have the same number and one is positive and one is negative. For example 2+ -2= 0

Hope this helps

Please help me

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One dozen mangoes cost $120.00. what is the cost of 8 mangoes??

Alenkinab [10]

Answer:

$80.00

Step-by-step explanation:

12m = 120

m = 10

Therefore, 8m must equal 80.

4 0

3 years ago

Read 2 more answers

Simplify completely 2x-24/8

aksik [14]

Answer
x=2/3
Explanation
2x-24/8
2x=24/8
8x(2x)=24/8X 8
16x=24
devide both by 8
2x=3
x=2/3

4 0

4 years ago

PLEASE HELP!!

Bezzdna [24]

Answer:

$y=-\dfrac{9}{40}x^2+\dfrac{441}{40}\\ \\y=-\dfrac{9}{160}x^2+\dfrac{1,521}{160}$

Step-by-step explanation:

If a parabola has its vertex on the y-axis, then its equation is

$y=ax^2+b$

This parabola passes through the point R(3,9), then

$9=a\cdot 3^2+b\\ \\9=9a+b$

The area of the right triangle PQR is

$A_{PQR}=\dfrac{1}{2}\cdot PQ\cdot QR$

Find PQ and QR, if $P(x_1,0),\ Q(3,0),\ R(3,9):$

$PQ=\sqrt{(x_1-3)^2+(0-0)^2}=|x_1-3|\\\\QR=\sqrt{(3-3)^2+(0-9)^2}=9$

Now,

$40.5=\dfrac{1}{2}\cdot |x_1-3|\cdot 9\\ \\90=9|x_1-3|\\ \\|x_1-3|=10\\ \\x_1-3=10\ \text{or}\ x_1-3=-10\\ \\x_1=13\ \text{or }x_1=-7$

We get two possible points $P_1(-7,0)$ and $P_2(13,0).$

For point $P_1:\\$

$0=a\cdot (-7)^2+b\\ \\49a+b=0$

So,

$b=-49a\\ \\9=9a-49a\\ \\-40a=9\\ \\a=-\dfrac{9}{40}\\ \\b=\dfrac{441}{40}\\ \\y=-\dfrac{9}{40}x^2+\dfrac{441}{40}$

For point $P_2:\\$

$0=a\cdot (13)^2+b\\ \\169a+b=0$

So,

$b=-169a\\ \\9=9a-169a\\ \\-160a=9\\ \\a=-\dfrac{9}{160}\\ \\b=\dfrac{1,521}{160}\\ \\y=-\dfrac{9}{160}x^2+\dfrac{1,521}{160}$

5 0

3 years ago

HIIIIIIII HELP ASAP AND PLEASE SHOW WORK

lys-0071 [83]

Volume of a rectangular prism is = L*W*H

Volume of box A is 4800cm^3

Since price is determined by volume, and the price of box A is $6.24 we need to find the price per cm^3. $6.24/4800cm^3 = $0.0013 per cm^3

Volume of box B is 5280cm^3

5280 * 0.0013 = $6.864 which is answer c

3 0

3 years ago

Read 2 more answers

-3x8 5.0 -2 x 5 9. 16 x -15 13.3 -14 x 2

Nutka1998 [239]

-3×8= -24

-2×5= -10

16× -15= -240

-14×2= -28

Hope this helps!

4 0

3 years ago