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goblinko [34]
3 years ago
11

I need 4 number to eqaul up to 15 and one has to be 9

Mathematics
1 answer:
Lisa [10]3 years ago
4 0

Answer:

x =2

Step-by-step explanation: 9 + 3x = 15

                                             -9 + 3x = -9

                                               3x = 6

divide both sides by 3

x = 2

the three other numbers are 2

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What is the area of a square when the side length is 2/3cm
Leviafan [203]

\bf \textit{area of a square}\\\\ A=s^2~~ \begin{cases} s=length~of\\ \qquad a~side\\[-0.5em] \hrulefill\\ s=\frac{2}{3} \end{cases}\implies A=\left( \cfrac{2}{3} \right)^2\implies A=\cfrac{2^2}{3^2}\implies A=\cfrac{4}{9}

7 0
3 years ago
Can i please get some (help on my maths)
quester [9]
ax^2+bx+c=0\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}


We\ have:\\\\15x^2+7x-12=0\\\\a=15;\ b=7;\ c=-12\\\\substitute\\\\x_1=\dfrac{-7-\sqrt{7^2-4\cdot15\cdot(-12)}}{2\cdot15}=\dfrac{-7-\sqrt{49-5(15)(-12)}}{30}\\\\x_2=\dfrac{-7+\sqrt{49-4(15)(-12)}}{30}

First option.
5 0
3 years ago
What is the product of 1 2/3 and −3 1/2?
Fynjy0 [20]
<span>1 2/3 x  −3 1/2
= 5/3 x -7/2
= - 35/6
= - 5 5/6

answer
A. </span><span>−5 5/6 ​</span>
6 0
3 years ago
Solve for x: You must show your work (how you got your answer).<br><br> 8x + 5 = 35
valentinak56 [21]

Answer:

3.75 or 15/4

Step-by-step explanation:

8x+5=35

Subtract 5 from the left side to cancel it out, do the same thing to 35.

8x=30

Divide 8x by 8 to get x alone, do the same thing to 30.

x=3.75, or once you simplify 30/8, you get 15/4.

6 0
3 years ago
I am confused, can someone help?
Natasha2012 [34]

Answer:

the figure made of two Ray's with a common vertex

Step-by-step explanation:

An angle is formed when two rays share a common endpoint. That common endpoint is called the vertex and the two rays are called the sides of the angle.

the first one the answer is vertex.

the last one is just simply not it.

3 0
3 years ago
Read 2 more answers
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