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olasank [31]
2 years ago
11

Use a model to multiply 5•(-3).

Mathematics
1 answer:
Rufina [12.5K]2 years ago
5 0
Hope this helps
tell me if i was wrong

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svetlana [45]
The first one, SAS Postulate
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3 years ago
If you’re good at geometry solve these 2 please
gizmo_the_mogwai [7]

Answer:

13.

Let us say

first angle be = 4x -10

second angle = x

now add them to 90 as complementary angles add up to 90

4x - 10 + x = 90

5x - 10 = 90

5x = 90+10

5x = 100

x = 100/5

x = 20

the first angle = 4x -10

                       = 4(20) -10

                       = 80 -10

                       = 70

the second angle = x

                             = 20

the angles are 70 and 20

8 0
2 years ago
Sarah worked 8 more hours than Paida (algebraic expression) ___
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X+8
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8 0
2 years ago
In the triangle below, which equation can be used to solve for x?
Murrr4er [49]
U forgot the attachment
4 0
2 years ago
Read 2 more answers
Solve quadratic formulax^2-4x+3=0
bekas [8.4K]

The general formula for a equation of the form:

ax^2+bx+c=0

is:

x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}

In this case we notice that a=1, b=-4 and c=3. Plugging this values in the general formula we get:

\begin{gathered} x=\frac{-(-4)\pm\sqrt[]{(-4)^2-4(1)(3)}}{2(1)} \\ =\frac{4\pm\sqrt[]{16-12}}{2} \\ =\frac{4\pm\sqrt[]{4}}{2} \\ =\frac{4\pm2}{2} \end{gathered}

then:

x_1=\frac{4+2}{2}=\frac{6}{2}=3

and

x_2=\frac{4-2}{2}=\frac{2}{2}=1

Therefore, x=3 or x=1.

8 0
9 months ago
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