1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergeinik [125]
3 years ago
15

What does this simplify to? 3+5.25 = 1 - 2.8x

Mathematics
1 answer:
ahrayia [7]3 years ago
7 0

Answer:

-2.59 = x

Step-by-step explanation:

3+5.25 = 1 - 2.8x

Combine like terms

8.25 = 1-2.8x

Subtract 1 from each side

8.25 -1 = 1-1-2.8x

7.25 = -2.8x

Divide each side by -2.8

7.25/-2.8 = -2.8x/-2.8

-2.589285714 = x

Rounding  

x=-2.59

You might be interested in
During a football game, a team lost 12 yards on the first play and then gained 5 yards on each of the next 3 plays. Which method
HACTEHA [7]

They got 5 yards on 3 plays. For total yards multiply the 3 plays by 5 yards. The first play was negative, so add the negative value.  The answer is A.

7 0
4 years ago
Read 2 more answers
Chapter 8 Written Homework 1. A hypothesis test is conducted to test the claim that the proportion of people with dark hair at M
UNO [17]

Answer:

we reject  H₀

Step-by-step explanation:  Se annex

The test is one tail-test (greater than)

Using   α = 0,05   (critical value )  from z- table we get

z(c) = 1,64

And Test hypothesis is:

H₀         Null hypothesis           μ   =  μ₀

Hₐ       Alternate hypothesis   μ   >  μ₀

Which we need to compare with z(s) = 2,19  (from problem statement)

The annex shows z(c), z(s), rejection and acceptance regions, and as we can see z(s) > z(c) and it is in the rejection region

So base on our drawing we will reject  H₀

3 0
3 years ago
(9x+2)(4x^2+35x-9)=0
pychu [463]
(9x+2)*(4x^2+35x-9)=0

we can make this...

9x+2=0

and

4x^2+35x-9=0

then...

9x+2=0

\boxed{x=-\frac{2}{9}}


4x^2+35x-9=0

x=\frac{-b\pm\sqrt{b^2-4*a*c}}{2*a}

x=\frac{-35\pm\sqrt{35^2-4*4*(-9)}}{2*4}

x=\frac{-35\pm\sqrt{1369}}{8}

x=\frac{-35\pm37}{8}

x_1=\frac{-35+37}{8}=\frac{1}{4}

x_2=\frac{-35-37}{8}=-9

\boxed{\boxed{S=\{\frac{1}{4},-\frac{2}{9},-9\}}}

I'm sure about my answer, don't matter the order...
4 0
3 years ago
Read 2 more answers
The coordinate grid shows three points P Q and R. the distance between Q and R is ____ units
Serhud [2]

Answer:

6

Step-by-step explanation:

you count how many units is in between the points

i hope this helps :)

4 0
3 years ago
Read 2 more answers
Which rules would result in a triangle A being congruent to or not congruent to B?
Ipatiy [6.2K]
Well the only thing that would make these triangles not congruent is dilation, Thus, translation, reflection, and rotations all make the triangles congruent.

The bottom one and third one are not congruent while everything else is.
<span />
3 0
3 years ago
Other questions:
  • I need help to find the measurement of angle x
    14·1 answer
  • Find the domain of:<br> F(x)= x^2-4/2x^3-32x
    6·2 answers
  • If ƒ = {(4, 2),(5, 1),(6, 2),(7, 3),(8, 6)}, then the range of ƒ is
    13·2 answers
  • If sally has 10 apples and takes away 3, how many does sally have?
    7·2 answers
  • A rectangle is constructed with its base on the diameter of a semicircle with radius 2 and with its two other vertices on the se
    10·1 answer
  • En un triángulo ABC, "I" es incentro del triángulo ABC. En AC se ubica el punto D, tal que m∡AID=90, BI = 18 y CD = 2, calcule I
    14·1 answer
  • Gabriel buys some pens for $3.77 and a case for $5.48 how much money does he pay altogether<br><br>​
    11·1 answer
  • Dmitri wants to cover the top and sides of this box with glass tiles that are 1 cm square. How many tiles
    13·1 answer
  • Pythagorean Theorem Level 2
    14·1 answer
  • Find the upper quartile for the data. {9, 6, 13, 8, 8, 10, 9.5, 8, 7.5, 8.5}
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!