3 years ago

Please help. answer my last question

Mathematics

1 answer:

viva [34]3 years ago

8 0

What is your last question?

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Please help and show work if you can

laila [671]

Answer:

25. a = 60

26. a = 17

Step-by-step explanation:

In these two problems we are going to use a property of parallelograms that says: opposite angles have equal measure

so we have

25.

$6a+10=130\\\\6a=130-10\\\\6a=120\\\\a=60$

and for 26 we have

$4a-4=2a+30\\\\4a=2a+30+4\\\\4a=2a+34\\\\4a-2a=34\\\\2a=34\\\\a=17$

6 0

3 years ago

If u = 2i - j; v= -5i + 4j and w = j find 4u (v -w).

Sedaia [141]

Answer:

-40

Explanation:

Given

u = 2i - j; v= -5i + 4j and w = j

Required

4u(v-w)

4u = 4(2i) = 8i

v - w = -5i + 4j - j

v - w = -5i + 3j

Substitute

4u(v-w)

= 8i(-5i+3j)

= -40(i*i) [since i*i = 1]

= -40

Hence the required solution is -40

5 0

2 years ago

Find the median of the following set of data 12,20,1,20,8

Alenkasestr [34]

Answer:

ok, i hate questions like these because i don't want to answer them

Step-by-step explanation:

6 0

3 years ago

(This photo didnt even get up yet!)

11Alexandr11 [23.1K]

Answer:

15 ways

Step-by-step explanation:

$\frac{6!}{4!(6-4)!}=\frac{6!}{4!2!}=15$

7 0

3 years ago

A store purchased a plasma screen TV and marked it up 95% from the original cost of $876.08. A week later, the

Ahat [919]

Answer:

95%-70%=15%

$876.08×15% =$131.412

3 0

3 years ago

Please help. answer my last question​

Please help. answer my last question