MATHEMATICS MIDDLE SCHOOL

Estimate the sum to the nearest whole number

29.1 +78.9 + 41.5

Answers

Answer 1

Answer:

I rounded each number to the nearest whole number and added those.

29 + 79 + 42 = 150

If you add the original numbers you would get 149.5, which rounds to 150.

Answer 2

Answer: when you estimate the sum to the nearest you add one number if the decimal is over 5. 29+79+42 = 150

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Solve x-7.6+9.4= -8.4

Answers

x - 7.6 + 9.4 = -8.4

First, simplify to x + 1.8
Your problem should look like: $x + 1.8 = -8.4$
Second, subtract 1.8 from both sides.
Your problem should look like: $x = -8.4 - 1.8$
Third, simplify.
Your problem should look like: $x = -10.2$

Answer: x = -10.2

What integer represents a credit of $35 if zero represents the original balance?

Answers

Integers are the whole numbers who can take both negative as well as positive values. The integer represents a credit of $35 is +35.

Zero represents the original balance in the account.

Now, the amount of $35 is credited.

Representation:

When the amount of $35 dollar credited then it can be represented with the green color of positive 35 integer in the account.

Thus, the amount is credited should be represented as +35 dollar.

To know more about it, please refer to the link:

brainly.com/question/11082920

it should be -35 because negative interfere represent below zero

The sides of a triangle are given by the equations 4x-y-7=0,x+3y-31=0 and x+5y-7=0.determine the point of intersection of its altitudesdetails: class 12,algebra,
title of chapter:
the general equations of straight lines.

Answers

Hello,

1)Let's call A=inter (4x-y-7=0, x+3y-31=0)
4x-y=7
x+3y=31
==>13x=52==>x=4
and y=4*4-7=9

A=(4;9)

2)Let's call B=inter (4x-y-7=0, x+5y-7=0)

4x-y=7
x+5y=7
==>21x=42
==>x=2 and y=4*2-7=1

B=(2,1)

3) Slope of BD: y=-x/3+31/3 ==> slope perpendicular=3

Line BD:y-1=3(x-2)==>y=3x+5

4) Slope AE: y=-x/5+7/5 ==>slope perpendicular=5
Line AE: y-9=5(x-4)==> y=5x-11

5) intersection (BD;AE):
y=5x-11
y=3x-5
==>2x=6==>x=3
and y=3*3-5=4
H=(3,4)

What is 5.38 in its expanded form

Answers

5.38 in expanded form is 5 + 0.3 + 0.08

Expanded form means you have to break it apart into addition.

5.38 in expanded form is:

5 + .3 + .08

Hope I Helped!!!

1. Chander and Tanisha have a backyard that is the shape of a trapazoid. The bases of the trapazoid are 20.1 m and 29.3m, and the height of the trapozoid is 17.9m. Find the area of the backyard to the nearest tenth.SOW WORK PLZZZZZ!!!!!

Answers

Area of trapezoid=1/2(base 1 + base 2)*h. base 1=20.1, base 2=29.3, h=17.9
2. Area of a square=side^2 Area of square=175. solve for side
3. a^2+b^2=c^2. (110^2)+110^2=c^2. solve for c.

How many minutes is 3/10