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natita [175]
3 years ago
13

Answer this and I’ll make you Brainly!!

Mathematics
2 answers:
ANEK [815]3 years ago
6 0

Answer:

-20

Step-by-step explanation:

2(xy-7)

When x=-1 y=3

Substitute the value of x and y in the equation given

Dealing with the bracket first

xy=-1×3

xy=-3

Substitute it into the bracket (-3-7)

=-10

Then back to the question

2(-10)

= -20

morpeh [17]3 years ago
3 0
X=-1
y=3

2(xy-7) = ?

Substitute the numbers
2(-1x3-7)

Use BIDMAS
2(-3-7)
2(-10)
-20
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6. Dina is moving and he is going to rent a moving van. She will need it for one day. The cost of renting the van $145 for the d
Marat540 [252]

Answer:

403.75

Step-by-step explanation:

we can write the following equation

.75m+145=price

we just need to plug in 345 for m

.75*345+145=price

put this into a calculator and get 403.75

6 0
3 years ago
The signs of the product of 263 and 0 is
Mashcka [7]
The answer to the question is 0
6 0
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What 8(9+16) plz i need help
Fynjy0 [20]
I think it would be 8*9+8*16 which would be 72+128= 200

3 0
3 years ago
Read 2 more answers
Simplify the linear expression.
Molodets [167]

Answer: The answer to the first is -29x-5. The Answer to the second is -5/6a - 5/8

Step-by-step explanation:I took the K12 test I hope this helps.

4 0
2 years ago
A wooden plank is leaning against a wall. The bottom of the plank is 3 feet from the wall. Answer each of the following question
Nadusha1986 [10]

AB = ==> distance between the bottom of the plank; and the wall ===> 3 ft.

C ====> 49 degrees

For letter a, to solve for AC:

AC ==> HYPOTENUSE. The angle C is the OPPOSITE side of AB.

use sine :

sin A ===> opposite/hypotenuse

Solve:

sin 49 ====> 3/AC

AC ====> 3 / sin 49

AC ====> 3.96 ft.

For letter b, to solve for BC:

We are now given with the base (3 ft.); and; the hypotenuse (3.96 ft.) so we can use the Pythagorean theorem:

a^2 + b^2 = c^2

Let:

a ===> AB

b ===> BC

c ===> AC

(AB)^2 + (BC)^2 ===> (AC)^2

3^2 + (BC)^2 ===> (3.96)^2

(BC)^2 ===> (3.96)^2 - 3^2

(BC)^2 ===> 6.6816

sqrt (BC)^2 ===> sqrt 6.6816

Answer: BC ===> 2.58 ft.

Hope that helps!!!! : )

3 0
3 years ago
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