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hram777 [196]
3 years ago
11

Evaluate the expression below when y = -3. 2y + 7 -4y − 10

Mathematics
1 answer:
Sedbober [7]3 years ago
4 0
1) 1
2) 2

hope this helped :)
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Please answer correctly !!!!!! Will mark brainliest !!!!!!!!!!!
Iteru [2.4K]

Answer:

1 A

2 A

Step-by-step explanation:

1. steps can be positive whole numbers only

2. there is 15 steps

7 0
2 years ago
½x + 1 ⅔ subtracted from 1 ½x - 1 ⅓<br> simplify IF NEEDED
Volgvan

Answer:

( \frac{1}{2} x + 1 \frac{2}{3} ) - (1 \frac{1}{2} x - 1 \frac{1}{3} ) \\  = ( \frac{1}{2}  -  \frac{3}{2} )x  +  ( \frac{5}{3}  +  \frac{4}{3} ) \\  =  \frac{ - 2}{2} x +  \frac{9}{3}  \\  =  - x + 3 \\  = 3 - x

4 0
3 years ago
E
Evgesh-ka [11]

Answer:

He bought 20 shirts

Step-by-step explanation:

shirts -- x

pants -- 3/4 of x

Therefore,

He bought --- 28(3/4 of x) pants and 40(x) shirts.

So, 28(3/4 of x) + 40(x) = 1220

=> 21x + 40x = 1220

=> 61x = 1220

=> x = 20

He bought 20 shirts and 15 pants.

Thenks and meak me brainliest :))

3 0
2 years ago
Find the value of x and the value of y.
Elan Coil [88]

Answer:

Step-by-step explanation:

According to the diagram ,

Hypotenuse = 10√3

Opposite = x

Adjacent = y

α = 60

Using SOHCAHTOA ,

Sin α = opp / hyp

Sin 60= x/10√3

√3/2= x/10√3

x = 15

Pythagoras theorem ;

Hypotenuse ^2 = Opposite ^2 +Adjacent ^2

10√3 ^2 = 15^2+ y^2

300 = 225 +y ^2

300 -225 = y^2

75 = y^2

y = √75y

y = 5√3

5 0
3 years ago
Is the simplified form of 2-3 + 3.3 rational?<br> Yes<br> No
N76 [4]

Answer:

YES IT IS

Step-by-step explanation:

2-3 + 3.3

= -1 + 3.3

= -4.3

We learn that:

Rational number: rational number is the number that can be written as a/b (a and b would be intergers and b is not equal to 0). Rational number would be most of numbers we use in out life, except Square root and Pi number.

In this case, -4.3 can be write as -43/10

So YES it would be a rational number

Hope this helped :3

6 0
3 years ago
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