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Trava [24]
3 years ago
9

What does -$20 -$15 +$30 $2 Equal

Mathematics
1 answer:
ad-work [718]3 years ago
4 0

Answer:

-3

Step-by-step explanation:

-20-15+30+2

-35+32

-3

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4.) Find the length of the second base of a trapezoid with one base
velikii [3]

Answer:

11

Step-by-step explanation:

Trapezoid area = (base1 +base2) x h/2

=> Base2 =[Area x 2/h]-base1 = [98.8 x 2/7.6] - 15 = 26-15=11

3 0
3 years ago
CAN SOMEONE HELP ME PLEASE ASAP!?
GalinKa [24]

Answer:

true

Step-by-step explanation:

the lines of the new shape are parallel to the lines of the original shape, there seems to be the same scaling factor for all sides and all "projection" lines BB' and CC' cross at A, which is also A' Ave the center of the dilation.

5 0
2 years ago
Find the cube roots of 8(cos 216° + i sin 216°).
Tomtit [17]
z^3=8(\cos216^\circ+i\sin216^\circ)
z^3=2^3(\cos(6^3)^\circ+i\sin(6^3)^\circ)
\implies z=8^{1/3}\left(\cos\left(\dfrac{216+360k}3\right)^\circ+i\sin\left(\dfrac{216+360k}3\right)^\circ\right)

where k=0,1,2. So the third roots are

z=\begin{cases}2(\cos72^\circ+i\sin72^\circ)\\2(\cos192^\circ+i\sin192^\circ)\\2(\cos312^\circ+i\sin312^\circ)\end{cases}
5 0
3 years ago
6.8x+9.3= -9.4+3.4(2-5x)
NemiM [27]

Answer: the answer to this is x=0.5

Step-by-step explanation:

In order to solve this you have to combine the multiplied terms into a single fraction so its going to look like this -   34x/5 + 9.3= -9.4+3.4(2-5x)

The reposition your terms and put together your multiplied terms into a fraction,Once you have that done distribute them

Subtract 9.3 on both sides.you may simplify and then multiply all the terms with the same value to get rid of the denominators from the fractions

also add 85x to both sides then finally divide both side by the same term which get you -59.5/119 and then simplify and you get -0.5

so x= -0.5

5 0
3 years ago
Read 2 more answers
I need help with the questions in the files
Margaret [11]

Answer:

okay im sorry but i can only help with the first page so im going to use the first equation as an example. when it tells you what x equals in this case four you put it in place of the variable and put it all together and see if those two numbers egual the amount given. so here it written out:

x +11=15 x= 4

4+ 11 + 15.

in this case yes the given numbers equal the amount.

really hope this helped you!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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