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erastova [34]
3 years ago
13

What plus what equals 90

Mathematics
2 answers:
Vikki [24]3 years ago
7 0
50+40 will equal 90 and 90+0 will equal 90 too.

Triss [41]3 years ago
4 0
10 + 80 = 90 subtract 90 to other numbers to get more equations
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Solve the equation. Check your solution and show all your work. 2/3 h = 4​
AlexFokin [52]

Answer: h=6

Step-by-step explanation:

4 0
3 years ago
-2/3X + 4/3 = -10/3 <br><br>solve each equation by first eliminating all fractions ​
bagirrra123 [75]

The solution of -2/3X + 4/3 = -10/3 by first eliminating all fractions is 7.0006

<u>Solution:</u>

We have been given an equation as follows:

-\frac{2}{3 x}+\frac{4}{3}=-\frac{10}{3}

And we have been asked to solve each equation by first eliminating all fractions.

The only way to solve this equation is by converting each of its components into decimals since it is stated in the question that we should not solve it in fraction form.

To do so we will individually convert the fractions to decimals and then substitute them back into the equation.

The 1st fraction in decimal form is:

-\frac{2}{3}=-0.6666

The 2nd fraction in decimal form is:

\frac{4}{3}=1.3333

And the 3rd fraction in decimal form is:

-\frac{10}{3}=-3.3333

So, now we substitute the decimals instead of the fractions in the given equation as follows:

\begin{array}{l}{-0.6666 x+1.3333=-3.3333} \\\\ {-0.6666 x=-3.3333-1.3333} \\\\ {x=-\frac{4.6666}{-0.6666}} \\\\ {x=7.0006}\end{array}

Therefore, the value of x in decimal from is 7.0006

3 0
3 years ago
Solve for y 1/2x-3/4y=-2
cupoosta [38]
 Simplify <span><span><span>12</span>x</span><span><span>12</span>x</span></span> to <span><span>x2</span><span>x2</span></span>
<span><span><span>x2</span>−<span>34</span>y=−2</span><span><span>x2</span>−<span>34</span>y=−2</span></span>
2 Simplify <span><span><span>34</span>y</span><span><span>34</span>y</span></span> to <span><span><span>3y</span>4</span><span><span>3y</span>4</span></span>
<span><span><span>x2</span>−<span><span>3y</span>4</span>=−2</span><span><span>x2</span>−<span><span>3y</span>4</span>=−2</span></span>
3 Subtract <span><span>x2</span><span>x2</span></span> from both sides
<span><span>−<span><span>3y</span>4</span>=−2−<span>x2</span></span><span>−<span><span>3y</span>4</span>=−2−<span>x2</span></span></span>
4 Multiply both sides by <span>44</span>
<span><span>−3y=(−2−<span>x2</span>)×4</span><span>−3y=(−2−<span>x2</span>)×4</span></span>
5 Regroup terms
<span><span>−3y=4(−2−<span>x2</span>)</span><span>−3y=4(−2−<span>x2</span>)</span></span>
6 Divide both sides by <span><span>−3</span><span>−3</span></span>
<span><span>y=<span><span>4(−2−<span>x2</span>)</span><span>−3</span></span></span><span>y=<span><span>4(−2−<span>x2</span>)</span><span>−3</span></span></span></span>
7 Simplify <span><span><span>4(−2−<span>x2</span>)</span><span>−3</span></span><span><span>4(−2−<span>x2</span>)</span><span>−3</span></span></span> to <span><span>−<span><span>4(−2−<span>x2</span>)</span>3</span></span><span>−<span><span>4(−2−<span>x2</span>)</span>3</span></span></span>
<span><span>y=−<span><span>4(−2−<span>x2</span>)</span>3</span></span></span>

7 0
3 years ago
Solve (x - 4)^2 = 5
Degger [83]
The answer should be C.


Hope this helps
3 0
3 years ago
The underwater Terror toller-coaster tide takes passengers up to a 123 feet above ground. It then quickly drops the riders 154 f
kap26 [50]

up (+)        123             187

down (-)            -154            -175

(123 + 187) - (154 + 175)

=    310        -      329

=                 -19

Answer: 19 feet below ground


5 0
3 years ago
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