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babymother [125]
3 years ago
9

Can someone pls help me with these two questions????

Mathematics
1 answer:
mel-nik [20]3 years ago
6 0

Answer:

Answer of Q. 20

Step-by-step explanation:

Hope this helps...☺

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Help!!! Explain too please
tatiyna

Answer:

5 cm/s

Step-by-step explanation:

The rate of change (ROC) is the speed at which the y variable (hieght) increases with the x variable (time). so ROC = 5.

the linear equation is y = mx + b, m is also the roc, b is the initial value, so,

if y = 60, x = 4 & b = 40, then making m the subject of equation will give the value of the ROC. i.e m = (y - b)/x = (60 - 40)/4.

6 0
3 years ago
-124 = -7(5x+ 6)- 6x how do I solve this
tangare [24]

Answer:

Step-by-step explanation:

-124 = -7(5x+ 6)- 6x                     Remove the brackets

-124 = -35x - 42 - 6x                   Combine like terms

-124 = -41x - 42                          Add 42 to both sides

-124+42 = - 41x                          Combine

-82 = - 41x

-82/-41 = x

x = 2

5 0
3 years ago
Translate the word phrase into a variable expression.
nydimaria [60]
The answer is B. 6n + 2

Explanation:  It says firsts, the product of 6. So, 6 it being multiplied. So, 6n. Then it says increased by 2. Addition.

Final expression: 6n + 2
8 0
3 years ago
Read 2 more answers
Can someone please help??? WILL MARK BRAINLIEST
olya-2409 [2.1K]

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)


To find the slope, you can use the slope formula and plug in the two points:

(3,63) = (x₁ , y₁)

(5,107) = (x₂, y₂)

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m=\frac{107-63}{5-3}

m=\frac{44}{2}

m = 22


Now that you know m = 22, plug it into the equation:

y = mx + b

y = 22x + b

To find "b", plug in one of the points into the equation (I will do both points)

(3,63)

y = 22x + b

63 = 22(3) + b

63 = 66 + b    Subtract 66 on both sides

-3 = b


(5,107)

y = 22x + b

107 = 22(5) + b

107 = 110 + b    Subtract 110 on both sides

-3 = b


y = 22x - 3

8 0
3 years ago
What is 0.2(5x – 0.3) – 0.5(–1.1x + 4.2) simplified?<br><br> 0.2 [5x + (–0.3)] + (–0.5)(–1.1x + 4.2)
anyanavicka [17]

Answer:

1.55x-2.16

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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