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balu736 [363]
3 years ago
7

Mrs. Winter's students reported the amount of time they spent reading last night. The line plot shows the fraction of an hour ea

ch student spent reading. How much total time did Mrs. Winter's students spend reading last night?

Mathematics
1 answer:
ad-work [718]3 years ago
5 0

Answer:

A. 10:45 HOURS

Step-by-step explanation:

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Solving multi step equations -12 = 3 - 2k - 3k
34kurt

-12 = 3 - 2k - 3k

-12 = 3 - 5k

-15 = -5k

15 = 5k

k = 3

6 0
3 years ago
Which pairs of triangles can be shown to be congruent using rigid motions?
Naddika [18.5K]

Answer:

Not congruent; not congruent; congruent; congruent; not congruent; not congruent

Explanation:

In order to be congruent, the side lengths of both triangles must be equal.

The base of triangle ABC is 2 units.  The base of triangle MNP is also 2 units.  The height of triangle ABC is 3 units; but the base of triangle MNP is not 3 units, it is 4.  The triangles are not congruent.

Similarly, both ABC and EFG have a base of 2 units.  However, the height of ABC is 3 while the height of EFG is 4; the triangles are not congruent.

The bases of ABC and STU are both 2 units, and the height of each is 3 units.  The triangles are congruent.

The base of EFG is 2, as is the base of MNP.  Both triangles also have a height of 4; the triangles are congruent.

The base of EFG is 2 units, as is the base of STU.  However, the height of EFG is 4 while the height of STU is 3; the triangles are not congruent.

The base of STU is 2 units, as is the base of MNP.  However, the height of STU is 3 while the height of MNP is 4; the triangles are not congruent.

7 0
3 years ago
Read 2 more answers
Solve the equation. x2 18x 81 = 25<br> a. 14, 4<br> b. –4, –14<br> c. 14, –14<br> d. –4, 4
Snowcat [4.5K]

Answer:

The answer is the option B

-4,-14

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}+18x+81=25  

x^{2}+18x+56=0  

so

a=1\\b=18\\c=56

substitute in the formula

x=\frac{-18(+/-)\sqrt{18^{2}-4(1)(56)}} {2(1)}

x=\frac{-18(+/-)\sqrt{100}} {2}

x=\frac{-18(+/-)10} {2}

x1=\frac{-18+10} {2}=-4

x2=\frac{-18-10} {2}=-14

7 0
4 years ago
Read 2 more answers
Why can’t you multiply or divide by zero to find equivalent ratios
Jobisdone [24]

Answer:0

Step-by-step explanation:whatever its multiplied or divided is still 0

8 0
3 years ago
Someone help I don't know this trig question ​
solong [7]

Answer:

Bill is 9.80 km apart from Concert

Step-by-step explanation:

It's given in the question,

m∠B = 75°

m∠C = 45°

By triangle sum theorem,

m∠A + m∠B + m∠C = 180°

m∠A + 75° + 45° = 180°

m∠A = 180° - 120°

m∠A = 60°

By sine rule,

\frac{\text{sin}(\angle A)}{BC}=\frac{\text{sin}(\angle C)}{AB}

\frac{\text{sin}(60)}{BC}=\frac{\text{sin}(45)}{8}

BC = \frac{8\text{sin}(60)}{\text{sin}(45)}

     = 9.80 km

Therefore, Bill is 9.80 km apart from Concert.

8 0
3 years ago
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