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3 years ago

10

create a divison problem with a 2-digit divisor using more than 1 set of compatible numbers, observe what happen when you estima

te usingt a differnt dividend , and when both are differnt using a calcutor compare the estimates to answer and describe the differences

1 answer:

liubo4ka [24]3 years ago

4 0

Here Is A Dividend That Might Help Is 12÷6=2

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What is the value of x to the nearest tenth?<br> A. 6.0<br> B. 13.4<br> C. 26.8<br> D. 30.0

lilavasa [31]

Use the Pythagorean theorem:

$\left(\dfrac{1}{2}x\right)^2+12^2=18^2\\\\\dfrac{1}{4}x^2+144=324\ \ \ |-144\\\\\dfrac{1}{4}x^2=180\ \ \ \ |\cdot4\\\\x^2=720\to x=\sqrt{720}\\\\\boxed{x\approx26.8}$

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3 years ago

In the diagram below, RA is parallel to ET, and RT is 21 units long. Find the length of ST

pav-90 [236]

Answer:

ST = 12 units

Step-by-step explanation:

As RA is parallel to ET, the angle in R is equal to the angle in T, and the angle in A is equal to the angle in E, so the triangle RAS is similar to the triangle SET.

If RT is 21 units, we have that RS + ST = 21 -> RS = 21 - ST

Using a rule of three with the sides of the triangle (as they are proportional), we have:

RS / ST = AR / ET

(21 - ST) / ST = 6 / 8

4 * (21 - ST) = 3*ST

84 - 4*ST = 3*ST

7*ST = 84

ST = 12 units

5 0

3 years ago

There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filming up full rows of

AleksandrR [38]

6 rows are empty.

112/7 = 16 rows

70/7 = 10 rows used.

4 0

2 years ago

Help me with this plz

Ganezh [65]

The answer to this is < because 0.45 squared root is 0.670 so 0.229 < squared root 0.45

5 0

3 years ago

When was the midpoint formula discovered?

photoshop1234 [79]

Answer:

$(\frac{x1+x2}{2}, \frac{y1+y2}{2})$

Step-by-step explanation:

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2 years ago