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3 years ago

18 take away negative 10 is wha

Mathematics

2 answers:

Elodia [21]3 years ago

5 0

The question 18-(-10)=28

Ilya [14]3 years ago

3 0

18--10=
the two negative signs make a plus so you simply have 18 + 10 which is 28

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In triangle DEF , DF = 16 and angle F = 45. Find the length of a leg. Leave your answer is radical form.

Inga [223]

B) would be my answer too

7 0

4 years ago

Question 17 two trains leave stations 252 miles apart at the same time and travel toward each other. one train travels at 100 mi

VLD [36.1K]

The distance between them is 252 miles
For meeting they reduce the distance with 252 miles
in an hour they reduce distance with 100+80=180 miles
180 miles...........1 hour
252 miles.............x hours
------------------------------------
x=252 /180=1,4 hours=84 minutes

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4 years ago

A rocket is shot off from a launcher. The accompanying table represents the height of the rocket at given times, where x is time

Gekata [30.6K]

Using a calculator, we find the quadratic regression equation, and find that the height at 5.1 seconds is of 879.57 feet.

<h3>How to find the equation of quadratic regression using a calculator?</h3>

To find the equation, we need to insert the points (x,y) in the calculator.

In this problem, the points are given as follows:

(0.4, 64), (0.8, 122), (1.2, 175), (1.6, 223), (2.3, 301).

Inserting these points into a calculator, the equation is:

y = 3.47231343x² + 157.1327045x - 12.12067446.

The height at 5.1 seconds is of:

y = 3.47231343(5.1)² + 157.1327045(5.1) - 12.12067446.

y = 879.57.

More can be learned about regression equations at brainly.com/question/17261411

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2 years ago

WILL MARK BRAINLIEST PLEASE HELP

masha68 [24]

Answer:

120 degrees

Step-by-step explanation:

First, you need to find the measurement of the angle that is supplementary to D.

To do that you do 180-130=50, we know this is true because the two angles make a straight line.

Then you can find angle 2 because we have two of the angles in the triangle. All triangles have measurements of 180, we can use this information by doing

180-(50+70)=60, so angle 2 equals 60, then to find angle 1 you do

180-60=120, because they make a straight line.

angle 1=120

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4 years ago

Alex made 4 quarts of lemonade using 1 3 13 cup of sugar. Which expression could be used to determine the amount of sugar needed

Ipatiy [6.2K]

Answer:

The amount of sugar needed to make 1 quart of lemonade is <u>1/12 cup</u>.

Step-by-step explanation:

Given:

Alex made 4 quarts of lemonade using 1/3 cup of sugar.