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lilavasa [31]
3 years ago
15

(-7)+(-4)+7 What is the answer to this

Mathematics
2 answers:
Maurinko [17]3 years ago
8 0

Answer:

-4

Step-by-step explanation: (-7)+(-4)+7= -4 ~ +4 = -11 + 7 = -4

Zanzabum3 years ago
7 0

Answer:

The answer is -4

Step-by-step explanation:

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Can someone tell me what the answer for <br> 2 kos60° + tan 45 ° ​
enot [183]

Answer:

{ \tt{2 \cos60 \degree +  \tan(45 \degree) }} \\  \\  = 2(0.5) + 1 \\  = 1 + 1 \\  = 2

8 0
3 years ago
Susan has 3 lists, each with 10 numbers. If there are 4 numbers on all three lists and 5 numbers on exactly 2 lists, how many nu
VikaD [51]

Answer:

Susan has 8 numbers belonging to just one list.

Step-by-step explanation:

Susan's 3 lists have 10 numbers each = 10 x 3 =  30 numbers

4 numbers appear on all three lists = 4 x 3 = 12 numbers

The remaining numbers after these 12 = 18 (30 -12)

Then, there are 5 numbers on 2 lists only = 5 x 2 = 10 numbers

The numbers on just one list = 18 - 10 = 8 numbers

Or

                                    List 1     List 2    List 3   Total

Numbers on each list    10           10         10      30

Numbers on 3 lists        -4           -4         -4        12

Numbers on 2 lists        -5           -5        -0        10

Numbers on 1 list only    1             1          6         8

6 0
3 years ago
Which would be included in a probability model for rolling a cube with faces numbered 1 through 6. Select all that apply.
scoundrel [369]

Answer:

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help, I tried it, but I keep getting the wrong answers
Aneli [31]

Answer:

my answer would be that

x = 17.91cm

(i'm not sure about it either but it's worth a try) !!

Step-by-step explanation:

so first off, using the equation given,

" c² = a² + b² — 2ab cos C "

we substitute the values in as,

a = 16

b = 30

then for C is the angle given, which is 30°

so the equation is now,

c² = (16)² + (30)² — 2(16)(30) cos 30°

now, you solve the two squared numbers and the back equation, also known as " 2ab cos C " with your scientific calculator.

so it now equals to,

c² = 256 + 900 — 960(0.87)

c² = 320.8

at last, when you have " c² = 320.8 " ,

remember to square root the answer so you have a smaller value.

so,

c equals to

\sqrt{320.8}

your final answer for the x value will be 17.91

(i hope this helps!)

8 0
3 years ago
The sum of five times a number and -6 is -2
koban [17]
So,

"The sum of five times a number and -6"
5n + -6 or 5n - 6

"is -2"
= -2

5n - 6 = -2

Add 6 to both sides.
5n = 4

Divide both sides by 5.
n =  \frac{4}{5} \ or\ 0.8\ or\ 80\ percent
7 0
3 years ago
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