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3 years ago

2x+7x+x in simplest form

Mathematics

2 answers:

soldier1979 [14.2K]3 years ago

8 0

10x combine like terms

sergeinik [125]3 years ago

3 0

Answer:

9x + x

Step-by-step explanation:

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Can someone please answer this question<br> Giving brainleist!

inna [77]

Answer:

a) 9000

b) 40

c) 630

d) 125

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3 years ago

Exponents how do you do them

konstantin123 [22]

3 to the power of 5

you multiply 3 times 5 instead of 3 times 3 times 3 times 3 times 3
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3 years ago

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Two tailors, Valentina and Laura, sit down to do some embroidery. Valentina can embroider 2 shirts per hour, and Laura can get t

mina [271]

Answer:

Valentina and Laura finished the same total number of shirts in $4$ hours.

Total number of shirts finished by Valentina $=23$

Total number of shirts finished by Laura $=23$

Step-by-step explanation:

Suppose that Valentina and Laura finished the same total number of shirts in $t$ hours.

Valentina can embroider 2 shirts per hour and Valentina has already completed 15 shirts.

Total number of shirts finished by Valentina $=2t+15$

Laura can get through 3 shirts per hour and Laura has completed 11 shirts.

Total number of shirts finished by Laura $=3t+11$

Therefore,

$2t+15=3t+11\\3t-2t=15-11\\t=4$

So,

Valentina and Laura finished the same total number of shirts in $4$ hours.

Total number of shirts finished by Valentina $=2(4)+15=8+15=23$

Total number of shirts finished by Laura $=3(4)+11=12+11=23$

6 0

3 years ago

How to solve 8x + 7= 31 step by step

Masteriza [31]

Answer:

Step-by-step explanation:

8x + 7 = 31 Subtract 7 from both sides

8x = 24 Divide by 8

8x/8 = 24/8

x = 3

3 0

3 years ago

Read 2 more answers

Solve the equation sin2∅=2sin∅, domain 0°≤B≤360°

Ann [662]

Answer:

∅ = 90°

Step-by-step explanation:

Given;

sin2∅=2sin∅

sin2∅ = 2sin∅Cos∅

but, Sin²∅ + Cos²∅ = 1

Cos²∅ = 1 - Sin²∅

Cos ∅ = √(1 - Sin²∅)

sin2∅=2sin∅ ↓

2sin∅Cos∅ = 2sin∅

2sin∅(√(1 - Sin²∅)) = 2sin∅

Let Sin∅ = P

2P( √(1 - P²)) = 2P

Divide both sides by 2P

√(1 - P²) = 1

Square both sides

1 - P² = 1

P² = 1 - 1

P² = 0

P = 0

Recall, Sin∅ = P

Sin∅ = 0

∅ = Sin ⁻¹(0)

∅ = 90°

5 0

3 years ago