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4 years ago

Alicia and Jamal completed the following proof: Given: 3x+7=x-5Proof: x=-6

Mathematics

1 answer:

Elis [28]4 years ago

5 0

Answer:

proven x = -6

Step-by-step explanation:

3x+7=x-5

subtract x on both sides

2x + 7 = -5

subtract 7 on both sides

2x = -12

x = -6

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An order comes in for 56 prs of skate shoes including 14 grey the order calls for 4 times as many hot pink pairs as red pairs an

Y_Kistochka [10]

I got 156 I don't k ow if this is correct

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4 years ago

Solve the equation using square roots. x2– 15 = 34

WINSTONCH [101]

Answer:

x=7 and X=-7

Explanation:

x^2-15=34

x^2=49

x=7 and X=-7

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4 years ago

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HELP!

Ratling [72]

B)
Because if you find the degrees for angle 1 you get:
180⁰ - 45⁰- 39⁰ = 96⁰ <- angle 1
The triangle in the center has 3 angles, and those 3 angles will equal 180⁰
So, 180⁰ - 96⁰ = 84⁰

Refer to the other answer to see how letter c was done

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4 years ago

Read 2 more answers

Kira, goran, & joe sent a total of 90 text messages during the weekend. Goran sent 5 fewer messages than Kira. Joe sent 3 ti

MissTica

Answer:

Kira sent 19 text messages, Goran sent 14 text messages and Joe sent 57 text messages.

Step-by-step explanation:

Let be "k" the number of text messages that Kira sent during the weekend, "g" the number of text messages that Gora sent during the weekend and "j" the number of text messages that Joe sent during the weekend.

We know know that they sent a total of 90 text messages then:

$k+g+j=90$

Goran sent 5 fewer messages than Kira. This is:

$g=k-5$

And Joe sent 3 times as many messages as Kira. Then:

$j=3k$

The steps to solve this are:

- Substitute the second equation and the third equatio into the first equation and then solve for "k":

$k+(k-5)+(3k)=90\\\\5k-5=90\\\\5k=90+5\\\\k=\frac{95}{5}\\\\k=19$

- Substitute this value into the second equation to find "g":

$g=19-5=14$

- Substitute the value of "k" into the third equation to find "j":

$j=3(19)=57$

4 0

4 years ago

Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following equation. y=x^2+x-4

7nadin3 [17]

C. <span>(-0.5, -4.25)
is your answer

(-b)/2a
(-1)/2(1)
x = -1/2 = -0.5

</span><span>y=x^2+x-4
y = (-0.5)^2 + (-0.5) - 4
y = -1 - 0.5 - 4
y = -4.25</span>

8 0

3 years ago