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
Vsevolod [243]
2 years ago
15

A student solved this problem and said the answer was 78.

Mathematics
2 answers:
katovenus [111]2 years ago
8 0
It's B.) The student’s answer is not reasonable. Estimation: 170 + 90 = 260
mestny [16]2 years ago
8 0
The answer is B because if you round to the nearest 10, B would be the answer. C is not correct because 93 rounded to the nearest 5 (like 175) is not 100. A is not correct because the estimation is not reasonable. D is also not correct because you would need to add the numbers, not subtract.
You might be interested in
How do u get really smart
Kay [80]
Haha, there isn't a thing that makes you 'really smart'. 

However, you can grow and improve your knowledge.

The more challenging material you expose yourself to, while putting in the effort to solve them, there's no doubt you'll definitely improve!

+ you can try exercising your brain every now and then by playing trivia games or reading books- do whatever interests you and helps you learn!
6 0
3 years ago
Read 2 more answers
What is 6 2/5 added by 2 3/10.Make sure your answer is fully reduced​
slava [35]

Answer:

8 7/10

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Which of the following is a solution of 4x^2=-9x-4
NeTakaya

Answer:

(-9+√17)/8

Step-by-step explanation:

its an example of quadratic

4 0
3 years ago
2x + 3(5x - 7) = 47<br> Please show steps
Marianna [84]

Answer:

x = 4.

Step-by-step explanation:

2x + 3(5x - 7) = 47

2x + 15x - 21 = 47

17x - 21 = 47

17x = 68

x = 68/17

x = 4.

6 0
3 years ago
Read 2 more answers
in the circl below, AD is diameter and AB is tangent at A. Suppose mADC=228*, find the measures of mCAB and mCAD. Type your nume
Andrew [12]

Given:

AD is diameter of the circle, AB is the tangent, and measure of arc ADC is 228 degrees.

To find:

The m\angle CAB and m\angle CAD.

Solution:

AD is diameter of the circle. So, the measure of arc AD is 180 degrees.

m(arcADC)=m(arcAD)+m(arcDC)

228^\circ=180^\circ+m(arcDC)

228^\circ-180^\circ+=m(arcDC)

48^\circ+=m(arcDC)

The measure inscribed angle is half of the corresponding subtended arc.

m\angle CAD=\dfrac{1}{2}\times m(arcDC)

m\angle CAD=\dfrac{1}{2}\times 48^\circ

m\angle CAD=24^\circ

AB is the tangent. So, m\angle BAD=90^\circ because radius is perpendicular on the tangent and the point of tangency.

m\angle BAD=m\angle CAB+m\angle CAD

90^\circ=m\angle CAB+24^\circ

90^\circ -24^\circ=m\angle CAB

66^\circ=m\angle CAB

Therefore, m\angle CAB=66^\circ and m\angle CAD=24^\circ.

4 0
2 years ago
Other questions:
  • Please Solve this question in order to receive the Brainliest
    7·1 answer
  • A wall is 15 ft. high and 10 ft. from a house.
    6·1 answer
  • The domain and target set of functions f and g isR. The functions are definedas:(b)•f(x) = 2x+ 3•g(x) = 5x+ 7(a)f◦g?(b)g◦f?(c) (
    8·1 answer
  • Which equation produces a line that is parallel to the line represented by the function below? y=2/5x+9
    15·2 answers
  • What is 0.4 divided by 0.242? Divide and check your answer using multiplication. Show your work.
    9·2 answers
  • How to round 64781 in thousands
    10·1 answer
  • Please help ASAP thank uob so much good day
    7·2 answers
  • This is my last day of school so i need help to finish this'
    11·1 answer
  • Plz help me if you're nice. If wrong answer i'll report you
    10·1 answer
  • Is 8/24 = 21/63 a proportion
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!