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3 years ago

12

what in a equation to represent the relationship "a number decreased by negative 7 and is the same thing as 48

1 answer:

murzikaleks [220]3 years ago

6 0

I think it would be n-(-7)=48

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3. Solve the following inequalities by performing a reverse operation to both sides. Show your work. (4

exis [7]

A. T+7=-13,
-13-7= -20,
-20+7=-13,
T = -20,

B. N-12=17,
29-12=17,
N = 29

7 0

3 years ago

What are two numbers you that can equal 42?

vladimir1956 [14]

Answer:

1x42 or 21+21 14x3 and 6x7. I know I was a little extra since you only said two but I just gave you a little more examples.

6 0

3 years ago

Read 2 more answers

iragen [17]

$\qquad \textit{Heron's area formula} \\\\ A=\sqrt{s(s-a)(s-b)(s-c)}\qquad \begin{cases} s=\frac{a+b+c}{2}\\[-0.5em] \hrulefill\\ a=7.2\\ b=6.7\\ c=4.5\\ s=\frac{7.2+6.7+4.5}{2}\\[0.5em] \qquad 9.2 \end{cases} \\\\\\ A\sqrt{9.2(9.2-7.2)(9.2-6.7)(9.2-4.5)}\implies A=\sqrt{9.2(2)(2.5)(4.7)} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill A\approx 14.704~\hfill$

4 0

3 years ago

0.6(4-2x)=20.5-(3x+10)

solong [7]

The solution of 0.6(4-2x)=20.5-(3x+10) is x = 4.5

<u>Solution:</u>

Given, expression is 0.6 ( 4 – 2x ) = 20.5 – ( 3x + 10 )

We have to solve the above given equation for x.

Now, take the equation

$\rightarrow 0.6(4-2 x)=20.5-(3 x+10)$

We have to use BODMAS rule. BODMAS means sequence of operations which is brackets, order, division, multiplication, addition and then subtraction

On solving the brackets, we get

$\rightarrow 0.6 \times 4-0.6 \times 2 x=20.5-3 x-10$

Now multiplication is given preference

$\rightarrow 2.4-1.2 x=10.5-3 x$

$\rightarrow 3 x-1.2 x=10.5-2.4$

Now subtraction is done

$\rightarrow 1.8 \mathrm{x}=8.1$

Now division is performed

$\rightarrow x=\frac{8.1}{1.8}=4.5$

Hence, the value of x is 4.5

5 0

3 years ago

-5y+6x=40 and 3y-8x=46

sweet-ann [11.9K]

-5y+6x=40
.75(3y-8x)=.75(46)

-5y+6x=40
2.25y-6x=34.5

-2.75y=5.5
Y=-2
———
3(-2)-8x=46
-6-8x=46
+6 +6
-8x=52
X=-6.5

(-6.5,-2) is the answer

3 0

4 years ago