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alisha [4.7K]
3 years ago
8

2. Decide which estimate is closest to the actual answer. Explain your reasoning.

Mathematics
2 answers:
sashaice [31]3 years ago
6 0
Question A 
take $100.80 divide it by 35 which would equal 2.88 
so round that up for 3.0 for the closest answer

Question B 
take 49.2 and divide it by 6 which would equal 8.2
so round it to the nearest number which would be 8.0

Question C
take 0.78 and divide it by 20L which would equal 0.039
so round that up to the closest number which would be 0.04L
DIA [1.3K]3 years ago
4 0

Answer:


A) The closest answer would be 3. This is true because you can round 100.80 to 100, then divide that by 40, which will get you 2.5, the closest answer to this is 3.0, or option 3.

B) The closest answer would be 8. This is true because you can round 49.2 to 50, then divide that by 10 (the number you get after rounding 6 up), which will get you 5, which is closest to 8.0, or option 2.

C) The closest answer would be 40. When you divide 100 (you rounded .78 to .100) by 20 (you don’t need to round), you get 0.005, this is closest to 0.04.

Hope this helps Buddy!

(I took the quiz)

Please mark me brainliest!


~Courtney


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Do the three points lie on one line?
padilas [110]

Answer:

Yes. No graph paper.

Step-by-step explanation:

Let's say the 3 points are A, B, C.

If A, B and C lie on one line then m_{AB} = m_{BC} = m_{AC}

m_{AB} = \frac{y_{B}-y_{A} }{x_{B}-x_{A}} = \frac{2-6}{3-5} = \frac{-4}{-2} = 2\\m_{BC} = \frac{y_{C}-y_{B} }{x_{C}-x_{B}} = \frac{8-2}{6-3} = \frac{6}{3} = 2\\\\m_{AC} = \frac{y_{C}-y_{A} }{x_{C}-x_{A}} = \frac{8-6}{6-5} = \frac{2}{1} = 2\\\\

Hence, they lie on one line.

You don't need to use a graph paper to prove it.

4 0
2 years ago
Divide mentally. 6.2 ÷ 2,000 = ? A. 0.31 B. 0.031 C. 0.0031 D. 0.00031
soldi70 [24.7K]
C. 0.0031 

6.2 divided by 2,000 = 0.0031
5 0
3 years ago
A line includes the points (4, 8) and (3, 5). What is its equation in slope-intercept form? Write your answer using integers, pr
stich3 [128]

Answer:

A line includes the points (4, 8) and (3, 5) whose equation in slope-intercept form will be :

y=3x-4

Step-by-step explanation:

The point slope form: (x_1,y_1) and(x_2,y_2)

(y-y_1)=m(x-x_1)

where : m = Slope of the line

m=\frac{y_2-y_1}{x_2-x_1}

A line includes the points (4, 8) and (3, 5).The equation of the line will be:

m=\frac{5-8}{3-4}=3

(y-8)=3\times (x-4)

y-8=3x-12

y=3x-4

(y=mx+c), where c is intercept at y axis.

The above equation represents slope-intercept form of the line.

6 0
3 years ago
Sandy decides to try golfing. She stands on the outer edge of a circular putting green. In the very centre if this putting green
Vedmedyk [2.9K]
Sandy is boring. She should hit the ball towards the hole and hope she doesn't miss.
7 0
3 years ago
Find the discriminant of 3x^2-10x=-2
Oksanka [162]

Answer:

76

Step-by-step explanation:

given a quadratic equation in standard form : ax² + bx + c = 0 : a ≠ 0

then the discriminant is Δ = b² - 4ac

given 3x² - 10x = - 2 ( add 2 to both sides )

3x² - 10x + 2 = 0 ← in standard form

with a = 3, b = - 10 and c = 2

b² - 4ac = (- 10)² - (4 × 3 × 2) = 100 - 24 = 76


7 0
3 years ago
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