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tamaranim1 [39]
3 years ago
12

Anyone knows #3 and 4 answers ?

Mathematics
1 answer:
UNO [17]3 years ago
4 0
3.saven. 4.2and5 Third
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Create an equivalent expression using the drop downs below 4(32 – 4).
GaryK [48]

Answer:

7x

Step-by-step explanation:

It equals 28 just like the problem with parentheses, 7x .

3 0
3 years ago
Solve x 2 + 9x + 8 = 0 by completing the square. What are the solutions?
vivado [14]

x^2+9x+8=0

 (x+1)(x+8)=0

x+1=0

x=-1

x+8 = 0

x=-8


 solutions are -1 and -8

3 0
3 years ago
An equivalent equation has been written by multiplying the second equation by 2.
AVprozaik [17]

its -5 so it is A,( -19/2, -5)

7 0
3 years ago
The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h.
saveliy_v [14]
I'm assuming the original equation is A= \frac{h(a+b)}{2}
Step 1: Multiply both sides by 2 to eliminate the denominator
Step 2: divide by h
Step 3: subtract a
b= \frac{2A}{h} -a
7 0
3 years ago
Jika garis 4x+ay = 8 dan ay=9x + 5 saling tegak lurus,maka nilai a
barxatty [35]

We are given equations as

4x+ay=8

Firstly, we will write in slope intercept form of line

y=mx+b

4x+ay=8

Subtract both sides by 4x

4x+ay-4x=-4x+8

ay=-4x+8

now, we can divide both sides by a

y=-\frac{4}{a} x+\frac{8}{a}

we can find slope

so, we get

m_1=-\frac{4}{a}

we are given second equation as

ay=9x+5

Firstly, we will write in slope intercept form of line

y=mx+b

divide both sides by a

y=\frac{9}{a} +\frac{5}{a}

we can find slope

m_2=\frac{9}{a}

we are given both lines are perpendicular

so, the multiplication of their slopes must  be -1

m_1\times m_2=-1

we can plug values

-\frac{4}{a}\times \frac{9}{a}=-1

now, we can solve for a

\frac{36}{a^2}=-1

Multiply both sides by a

\frac{36}{a^2}\times a^2=1\times a^2

36= a^2

now, we can solve for a

we get

a=-6,a=6...............Answer

4 0
3 years ago
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