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3 years ago

14

[15 POINTS] Please help me!

2 answers:

steposvetlana [31]3 years ago

8 0

Answer:

1) y=2x+7 2) y=4 and y=3

Step-by-step explanation:

1) you start knowing that the slope-intercept equation is y=mx+b. M stands for your slope so you just plug 2 in for m. Then you plug in the x to see how to make it equal 1. As you look at it you realize that 2*-3 is -6 and you need to add 7 to get to one. Therefore the seven would be the B.

2) Since there is no slope the lines just go on the horizon at the y point of 4 or 3.

kari74 [83]3 years ago

5 0

Hello i don't know the answer

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A deck crane is used to lift very heavy objects

Ilya [14]

Answer:

56 meters

Step-by-step explanation:

diameter = 2(radius)

2 x 28 = 56

8 0

3 years ago

Pls put the answers in order ty!! I really appreciate giving me the answers!! :)))

Valentin [98]

Answer:

48 pizzas

60 pizzas

72 pizzas

Step-by-step explanation:

So pretty straight forward

So first you divide the amount of cheese by 3

so for the first one you have 18 pounds of cheese

Now 18/3=6

Now using that quotient (6) you multiply that by 8

6*8=48

So 18 pounds of cheese is 48 pizzas

Same thing with the others, even with the decimal one

6 0

3 years ago

Simplify? can you please help me understand this? I need some help! thanks so much!

jeyben [28]

Yo just reduve the fraction by dividing it into 2 or 3
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6 0

3 years ago

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ExtremeBDS [4]

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8 0

3 years ago

Read 2 more answers

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

frutty [35]

Answer:

$sin(a+b)=\frac{4\sqrt{21}+2\sqrt{65}}{45}$

Step-by-step explanation:

we are given

$sin(a)=\frac{4}{9}$

$sin(b)=\frac{2}{5}$

Firstly, we will draw triangle

we get

$cos(a)=\frac{\sqrt{65} }{9}$

$cos(b)=\frac{\sqrt{21} }{5}$

now, we can sue formula

$sin(a+b)=sin(a)cos(b)+cos(a)sin(b)$

now, we can plug values

$sin(a+b)=\frac{4}{9}\times \frac{\sqrt{21} }{5}+\frac{\sqrt{65} }{9}\times \frac{2}{5}$

now, we can simplify it

$sin(a+b)=\frac{4\sqrt{21}+2\sqrt{65}}{45}$

6 0

3 years ago