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bogdanovich [222]
3 years ago
13

What is the solution to 3x + 7 < 19?

Mathematics
1 answer:
eimsori [14]3 years ago
6 0
3x+7<19
3x+7-7<19-7
3x<12
3x/3<12/3
x<4.
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PLEASE HELP ASAP !!!!!!!!!!!!!!!!!!!
krok68 [10]
Option a, as the decimal point moves 7 places to the left :)
7 0
3 years ago
Read 2 more answers
Paul wrote the equation t=2m+40 to represent the temperature, t, in degrees Celsius, after a substance had been heated for m min
Usimov [2.4K]
First you need to fill in the variables with what you already know, so
t=2m+40.
You don’t have enough information to solve this problem. You need to have only 1 variable to solve it or you need more information
4 0
3 years ago
The quadrilateral shown is a rectangle. What is the measure of PR? (round to the nearest hundredth)
sladkih [1.3K]

Option B) 37.12 is the right answer

Step-by-step explanation:

It is given that the qudrilateral is a rectangle which means that opposite sides wil be equal and all interior angles will be 90 degrees

So

PS = 17

PQ = SR = 33

The diagonal PR will form a right-angles triangle with PR being the hypotenuse

So,

Base = SR = 33

Perpendicular = PS = 17

Hypotenuse = PR = ?

The Pythagoras theorem will be used to find the length of PR

So,

H^2 = B^2+P^2\\(PR)^2 = (SR)^2 + (PS)^2\\PR^2 = (33)^2+(17)^2\\PR^2 = 1089+289\\PR^2 = 1378\\

Taking square root on both sides

\sqrt{PR^2} = \sqrt{1378}\\PR = 37.1214

Rounding off to nearest 100th

PR = 37.12

Hence,

Option B) 37.12 is the right answer

Keywords: Triangle, Pythagoras theorem

Learn more about triangles at:

  • brainly.com/question/4892332
  • brainly.com/question/4924817

#LearnwithBrainly

6 0
4 years ago
Marty is taking piano lessons. She is going to practice every afternoon. The 1st week she practiced for 11 minutes each day. The
defon

Answer:

m=7w+4

Step-by-step explanation:

<u>Linear Modeling</u>

It consist is setting up a linear relationship between two variables, given some experimental data. Only 2 points are needed to set up the equation of a line, but if more than 2 points are used, then the result should use statistical approaches like linear regression to find the best-fit line.

For the question at hand, Marty practices his piano lessons 11 minutes the week #1. It provides the first point (1,11). He practices 25 minutes per day on the third week. It gives us another point (3,25). This is enough to find the equation of a line. The general formula for a line, having two points (m1,w1) (m2,w2) is

\displaystyle m-m_1=\frac{m_2-m_1}{w_2-w_1}(w-w_1)

Let's plug in our values

\displaystyle m-11=\frac{25-11}{3-1}(w-1)

Simplifying:

m-11=7w-7

\boxed{m=7w+4}

3 0
4 years ago
What are the steps to covert the answer into a mixed fraction of this problem 45 x 3/8= 135/8
riadik2000 [5.3K]
1. Divide 135 by 8 which is equal to 16
2. Multiply 16 ×8 = 128
3. Subtract 135 - 128 =7

The seven represent the numerator so it would be 7/8.

The finally answer would be

16 \ \frac{7}{8}
7 0
3 years ago
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