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
nexus9112 [7]
3 years ago
13

7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)

Mathematics
2 answers:
sesenic [268]3 years ago
7 0

Answer :

m = 13.4/4.65

Step by step :

7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)

7.8 + 2.75m + 0.8 = -6.4m + 4.5m - 4.8

2.75m + 6.4m - 4.5m = -7.8 - 0.8 - 4.8

4.65m = 13.4

m = 13.4/4.65

Pavel [41]3 years ago
7 0

Answer:

B

Step-by-step explanation:

She is incorrect because when substituting 2 for m the result was a false statement.

You might be interested in
Help Please !!! Math
Keith_Richards [23]
The 3rd one I thinkkkkk ??
6 0
3 years ago
A 12-foot-long support board is attached to thecenterof a 16-foot-high vertical display board.What is the width (w) of the horiz
Alenkasestr [34]

Answer:

4 ....,..........................................

5 0
3 years ago
A 5-foot tall person standing with her back to the sun casts an 12-foot long shadow. To the nearest degree, what angle does the
swat32

Answer:

  • 23°

Explanation:

<u>1) Data:</u>

a) height of the person = opposite-leg to the angle the sun makes with the ground = 5 ft

b) length of the shadow = adjacent-leg to the angle the sun makes with the ground = 12 ft

c) angle, α = ?

<u>2) Solution</u>

  • tanα = opposite-leg / adjacent-leg

  • tanα = 5 ft / 12 5t = 5/12

  • α = arctan(5/12) = 22.6°

  • 22.6° rounded to the nearest degree is 23° ← answer
5 0
3 years ago
A hot air balloon is at an altitude of 240 feet. The balloon descends 30 feet per minute. What equation gives the altitude y, in
Sliva [168]
Since the altitude started at 240 ft then that will be the constant, and, since it descends 30 ft/min, then 30 will be your slope.

y=30x+240<span />
7 0
3 years ago
Kevin has a net monthly income of $5,400.
luda_lava [24]
His budget should be $2,000.
8 0
3 years ago
Other questions:
  • A student takes a 15 question
    9·1 answer
  • Identify which lines are parallel y=(1/2)×+4
    15·1 answer
  • Someone bought three t-shirts for $15 and nine $0. 90 each including tax how much did he spend
    9·1 answer
  • Use the drop-down menus to complete the statements to match the information shown by the graph
    11·1 answer
  • Use the disk method or the shell method to find the volumes of the solids generated by revolving the region bounded by the graph
    10·1 answer
  • PLEASE HELP ME <br> SHOW ALL THE WorK BC I DONT know how to do it.<br> Will give brainliest
    14·1 answer
  • Is the line of best fit y=-2.9114x+40.7464 or y=-2.9114x+46.5693 ? Please help i’m in a rush!
    5·1 answer
  • If a load of snow contains 3 tons it will weigh how many pounds
    10·1 answer
  • The ratio 4/7:8/21 has a unit rate of 3/2 true or false
    5·1 answer
  • What is the slope of the line shown?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!