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3 years ago

PLEASE ANSWER ASAPP I HAVE A PICTURE ATTACHED

Mathematics

2 answers:

Alik [6]3 years ago

3 0

Its c I've done this before

victus00 [196]3 years ago

3 0

Answer:

Step-by-step explanation:

just do it.

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2(3x+7)+x=70<br> That it I need help

mafiozo [28]

2(3x+7)+x=70

mutiply the bracket by 2

(2)(3x)(2)(7)+x= 70

6x+14+x= 70

6x+x+14= 70 ( combine like terms)

7x+14= 70

move 14 to the other side

sign changes from +14 to -14

7x+14-14=70-14

7x= 56

divide both sides by 7

7x/7= 56/7

x=8

Answer: x= 8

4 0

3 years ago

Given cosθ=3√3 and sinθ<0 . What is the value of sinθ ?

guapka [62]

Answer:

Doesn't make sense.

Step-by-step explanation:

-1 ≤ cosθ ≤ 1

=> cosθ = 3√3 doesn't make sense.

7 0

3 years ago

Find the are of the circle below.

Tanya [424]

To find the area of the circle with diameter = 18 cm

We will use the formula:

$\text{Area of a cirlce = }\pi r^2$

where r= radius of the circle

From the quesion diameter = 18 cm

radius = diameter/2

radius = 18cm/2 = 9 cm

substituting r = 9cm into the formula

$Area\text{ of a circle = }\pi(9)^2$ $A\text{rea of the circle }=\text{ 81}\pi cm^2$

The above answer is when we are to leave the answer in terms of π

Otherwise if π is given to be 3.14 or 22/7 , we will simply substitute into the formula

That is given that π= 3.14

$\text{Area of the circle = 81 }\times3.14=254.34cm^2$

7 0

1 year ago

In 2011, there were 150 participants in a quiz competition. In 2012, there were 185 participants in this quiz competition.

soldi70 [24.7K]

Answer:

c.) The absolute change is 35 students and the relative change indicates an increase of 23.3%

Step-by-step explanation:

the participants increasing = 185-150=35

the percentage = 35/150 × 100% = 23.3%

7 0

3 years ago

HELP!! I WILL MARK YOU BRANLIEST IF YOU RESPOND THE FASTEST AND IF ITS CORRECT :)

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

5 0

3 years ago