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vesna_86 [32]
2 years ago
15

Answer the following about estimating 502/8 .

Mathematics
2 answers:
djyliett [7]2 years ago
5 0
(a) The first answer is “A” because 480 / 8 is = 60

(b) a the answer is also “A” because 502 / 8 = 62.5, so it is a underestimate
Semmy [17]2 years ago
5 0
The answers are 60 and 70
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Rewrite the expression in standard form<br><br>5g • 7h<br><br>2 • 4 • 5 • m •n​
OverLord2011 [107]

Answer: 35gh, 40mn

Step-by-step explanation:

You just multiply the numbers!

3 0
3 years ago
What are the solutions of the following system?
Andreyy89
X^2 + y^2 = 25
2x + y = -5.....y = -2x - 5

x^2 + (-2x - 5)^2 = 25
x^2 + (-2x - 5)(-2x - 5) = 25
x^2 + (4x^2 + 20x + 25) = 25
5x^2 + 20x + 25 = 25
5x^2 + 20x = 0
5x(x + 4) = 0

5x = 0         2(0) + y = -5
x = 0            y = -5

x + 4 = 0      2(-4) + y = -5
x = -4           -8 + y = -5
                     y = 3

solutions are : x = 0, y = -5.....and x = -4, y = 3

3 0
4 years ago
53 less than twice jose score using the variable j to represent jose score
Damm [24]

Answer:

2j - 53

Step-by-step explanation:

"53 less than twice jose's score" comes out to 2j - 53.

3 0
4 years ago
Read 2 more answers
The graph shows the volume of oil (L litres) in a tank at time t seconds. a)find the gradient of the graph b)explain what this g
Alisiya [41]

Answer/Step-by-step explanation:

a. Using two points on the line (0, 2) and (4, 12), find the gradient:

Gradient = ∆y/∆x = (12 - 2) / (4 - 0) = 10/4 = 2.5

Gradient = 2.5

b. The gradient, 2.5, represents the unit rate. That is, the volume of the oil in the tank per second.

i.e. 2.5 litres per second

c. The value, L = 2 represents the y-intercept, which is the starting value or initial volume of oil in the tank at 0 secs.

4 0
3 years ago
how many spherical pellets of diameter 4 cm can be made out of a cube of lead for which each edge measures 27 cm ? round the ans
Harlamova29_29 [7]
<h2>587</h2>

Step-by-step explanation:

       A lead cube of side 27\text{ cm} is used to make spherical pellets of diameter 4\text{ cm}.

       As the volume of lead is conserved, the volume of raw material equals the volume of finished products.

       \text{Volume of cube} = \text{Volume of spheres produced}

Let us assume that n cubes are produced. Volume of a cube of side s is s^{3}. The volume of a sphere of diameter d is \dfrac{\pi d^{3}}{6}.

       (27\text{ cm})^{3}=n\times (\dfrac{\pi (4 cm)^{3}}{6} )\\\\19683\text{ cm}^{3}=n\times (\dfrac{32\pi \text{ cm}^{3}}{3} )\\\\n=587.37

       n is rounded off to 587.

∴ 587 spherical pellets can be made.

7 0
4 years ago
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