Javier's grandmother lives 120 miles away.It takes 1 hour to travel 40 miles by train.If Javier leaves at 7 a.m.,is it reasonable to say he will arrive in his grandmother's city by 9 a.m.?

Answers

Answer 1
Answer: No becuase Javier has to drive 3 hours. 40 times 3=120

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The area of a circle is 615.44 in2. What is the diameter of the circle? Use 3.14 for π.

Answers

The diameter of the circle is 28 inches.

Given:
Area of a circle = 615.44 in²

Area of a circle is computed by multiplying pi and the radius raised to the 2nd power.

A = π r²
615.44 in² = 3.14 * r²
615.44 in² / 3.14 = r²
196 = r²
√196 = √r²
14 in = r

Diameter is twice its radius. So, d = 2r; d = 2 * 14 ; d = 28 inches

Answer:

The diameter= 28in

Step-by-step explanation:

There are 30 students in Mrs.Woodward’s class, and 1/2 of the class has their own cellphone.Of this group of students, 1/3 of them are allowed to use social media. How many of the students have a cellphone and can use social media?

Answers

Answer:7

Step-by-step explanation:

7,because 30-1/2=7

Half of 30 students would be 15 (30 / 2 = 15)

One third of 15 is 5 (15 / 3 = 5)

15 students have cellphones, 5 of them are allowed to use social media.

Pierce has 8 minutes to complete 10 math problems. How many minutes does he have to spend on each problem? Answers:2/10 minute, 8/10 minute, 10/8 minute, or 1 2/8 minute

Answers

8 minutes for 10 problems

We want to find the unit rate.
Basically, how long does it take to do just 1 problem?

Divide each number by 10.

8/10 minute for 1 problem

This could simplify to 4/5 because both the top and bottom are divisible by 2, but since 8/10 is one of the answers, pick that.

If you have 3 tons of milk how many cups are there and then divide by 5

Answers

Jdhdh hdjdud jsjsjs jsjd

If (-3) exponent -5 = 1/x, what is the value of x?
-243
- 1/243
1/243
243

Answers

Answer:

\boxed {-243}\n

Step-by-step explanation:

\begin{array}{rclr}(-3)^(-5) & = & (1)/(x)& &\n(-3)^(5) & = & x &\text{Inverted each side of the equation}\nx & = & \boxed {\textbf{{-243}}}\n\end{array}

Let JK be the median of LMBA. Find JK, m∠A and m∠ALM

Answers

Answer:

JK = 83 , m∠A = 70° , m∠ALM = 110°

Step-by-step explanation:

* Lets explain how to solve the problem

∵ ABCD is a trapezoid

∴ DC // AB

∴ m∠D + m∠A = 180° ⇒ interior supplementary angles

∵ m∠D = 110°

∴ 110° + m∠A = 180° ⇒ subtract 110° from both sides

∴ m∠A = 70°

∵ L is the midpoint of AD, and M is the midpoint of BC

∴ LM is the median of trapezoid ABCD

∴ LM // AB and DC

∴ m∠D = m∠ALM ⇒ corresponding angles

∵ m∠D = 110°

m∠ ALM = 110°

- The length of the median is half the sum of the lengths of the two

 parallel bases

∴ LM = 1/2 (AB + DC)

∵ AB = 96 units and DC = 44 units

∴ LM = 1/2 (96 + 44) = 1/2 (140) = 70 units

- In the quadrilateral ABML

∵ AB // LM

∵ AL ≠ BM

∴ ABML is a trapezoid

∵ JK is its median

∴ JK = 1/2 (AB + LM)

∵ AB = 96 units ⇒ given

∵ LM = 70 units ⇒ proved

∴ JK = 1/2 (96 + 70) = 1/2 (166) = 83

JK = 83 units