... the product of 86 and the depth of the river ... into variable expression

Answers

Answer 1

Answer:

A variable expression is an expression that contains variables or letters in their simplest form. If we assign real values to the variables, then we can evaluate the variable expression for that real value.

Since we do not know the depth of the river, we assign a variable to it.

We let the variable $d$ , represent the depth of the river.

Then, the product of $86$ and the depth of the river $=86* d=86d$

Answer 2

Answer: product means multiplication either
86n
or

86*n which are the same thing

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What is 1 tenth of 3.0. as a decimal

Answers

Answer=0.3

1/10 of 3.0 is 0.3

3.0*(1/10)=0.3

jean needs to graph the function below y= 7x^2 + 8x - 6 How many time should the graph of this function intersect at the x-axis?

Answers

when it intersects the x axis, the y value is 0
0=7x^2+8x-6
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answe is 2 times

Calculate (6x10^5)x(2.37x10^2)

Answers

14.22x^100101 I think that's the answer...

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A plane, parallel to the base of a cone intersects the cone at the midpoint between points A and B. Determine the area of the cross-section formed by the intersection of the plane and the cone. Leave your answer in terms of pi. 2o height 6 radiusA) 1.5π in2
Eliminate
B) 3π in2
C) 9π in2
D) 36π in2

Answers

Answer:

Area of cross-section is $9\pi in^(2)$

Step-by-step explanation:

Given a cone and a plane parallel to base intersect the cone at the mid point of points between A and B.

We have to find the area of cross-section formed by intersection of the plane and the cone which is a new circle formed.

Given, height=20 in

radius=6 in

By mid point theorem i.e the line segment formed by joining the mid points of two side of triangle is parallel to third equal to half of the third side.

therefore new circle formed is of radius 3 in

Hence, area of cross-section formed by intersection of the plane and the cone which is a new circle formed= $\pir^(2)$

= $3^(2)\pi$

= $9\pi$ $in^(2)$

jamie is running a race that is 26.2 miles long and she is running at a speed of 8 miles per hour. she has completed 3/4 of the race already.How much longer will it take her to finish the race?