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AVprozaik [17]
3 years ago
12

What does x equal in this equation?

Mathematics
2 answers:
Simora [160]3 years ago
7 0
The correct answer is x=1
tankabanditka [31]3 years ago
7 0
The answer is x=1. That question is easy.
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2x=90<br> 3y-2x=90<br> Please tell me work
svp [43]
90 divided by 2= 45 so x=45
2•45=90
So, for the next one y=60 because 90+90=180
3•60-2•45=90
5 0
3 years ago
Find the vertex of the parabola: y = -2x2 - 4x - 7
snow_lady [41]
X=-b/2a=4/14=2/7
Plug this value back into the function to find the corresponding Y value
7 0
2 years ago
78/14 Between which two consecutive whole numbers does this value lie? Enter your numbers in the box
Zigmanuir [339]

Given number is 78/14.

We have to find two whole numbers between which given number 78/14 lies.

Let's convert that into mixed fraction.

To do that we divide 78 by 14 to find the quotient.

We see that 14 goes 5 times into 78 and leaves remainder of 8.

So we can rewrite 78/14 as 5\frac{8}{14}.

5\frac{8}{14} means little more than 5 but less than 6.

So required two whole numbers are 5 and 6.



5 0
3 years ago
What is 3 1/3 x 2 1/4 ?
vfiekz [6]

3 \frac{1}{3}  \times 2 \frac{1}{4}  \\   = \frac{(3 \times 3) + 1}{3}  \times  \frac{(2 \times 4) + 1}{4}  \\  =  \frac{9 + 1}{3}  \times  \frac{8 + 1}{4}  \\  =  \frac{10}{3}  \times  \frac{9}{4}  \\  =  \frac{90}{12}  \\  =  \frac{15}{2}
The answer is 15/2 = 7.5
8 0
3 years ago
Read 2 more answers
Given: 3x+1 = -14; Prove: x=-5
Sav [38]

Answer: the most straight-forward way to prove this is to plug -5 in the equation as the value of x. If the the equality holds, it is proven that x=-5:

3x+1=-14       | use x=-5

3(-5)+1=-14

-15+1=-14

-14=-14  --> equality holds --> x=-5 is a solution to 3x+1=-14

6 0
3 years ago
Read 2 more answers
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