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ivann1987 [24]
2 years ago
12

Solve by substitution 9x+y=21, -x-3=y

Mathematics
1 answer:
VashaNatasha [74]2 years ago
4 0

Answer:

point form: (3,-6)

equation form: x=3, y=-6

Step-by-step explanation:

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Solve the equation below for the variable "x". *<br> - 2x + 10 = 8
Brums [2.3K]

Answer:

x = 1

Step-by-step explanation:

Subtract 10 from 8 to get -2. Then divide -2x by itself so it will cancel out. Whatever you do to one side of the equation, do to the other so divide -2 by -2 to get your answer of 1

3 0
3 years ago
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PLSS HELP ASAP TYSM &lt;33 SORRY I COULDN'T FIND SCIENCE LOLL ​
dimaraw [331]

Answer:

Rock D.

Step-by-step explanation:

We can assume that the force that the catapult does is always the same.

So, here we need to remember Newton's second law:

F = m*a

force equals mass times acceleration.

Where acceleration is the rate of change of the velocity.

So, if we want the rock to hit closer to the catapult, the rock must be less accelerated than rock B.

So, we can rewrite:

a = F/m

So, as larger is the mass of the rock, smaller will be the acceleration of the rock after it leaves the catapult (because the mass is in the denominator). So if we want to have a smaller acceleration, we need to choose a rock with a larger mass than rock B.

Assuming that the mass depends on the size, the only one that has a mass larger than rock B is rock D.

So we can assume that rock D is the correct option.

5 0
3 years ago
Find the midpoint m of the line segment joining the points p (-5,-3) = q and = (-1,-1)
babymother [125]
Hello, hope this makes some sense, the midpoint formula is what’s given in the picture and the rest is just substitution

5 0
1 year ago
A science class helped to estimate the population of various species in their local woods. Initially they tagged various numbers
Morgarella [4.7K]

Answer:

67

Step-by-step explanation:

8 0
2 years ago
Type the correct answer in the box
TiliK225 [7]

The expression of X in terms of l is X = √5 l

<h3>How to calculate the diagonal of a rectangle</h3>

According to the given information:

  • Length = w
  • If length<u> l is twice as long </u>as the width, then l = 2w

Determine the diagonal using the Pythagoras theorem:

X² = w²+(2w)²
X² = w² + 4w²

X =√5w²
X = √5 w

Replace w with l

X = √5 l

Hence the expression of X in terms of l is X = √5 l

Learn more on diagonals here: brainly.com/question/26154016

5 0
2 years ago
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