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sweet-ann [11.9K]
3 years ago
9

Choose the correct number sentence that shows how many boys are in the fourth grade?

Mathematics
2 answers:
Tatiana [17]3 years ago
6 0

Answer:

OPTION C

Step-by-step explanation:

78-39=39

so: 39+39=78          (b=39)

so: 39+b= 78

BARSIC [14]3 years ago
4 0

Answer:

Given - 78 students

39 girls

To find - Correct equation represent boys

Solution -

39 + b = 78

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Find the total surface area of this cone.<br> leave your answer in terms of pi<br> R=3<br> L=4
Yuliya22 [10]

Answer:

total surface area of cone is πr (r+l)

22/7 x 3 (3+4)

22/7*3 (7)

22 x 3 ( as 7 that was divided by 22 was cut out with 7 in the bracket)

hence,

TSA of cone = 66pi

8 0
3 years ago
What is the length of a missing side of a 48 feet and 52 feet 90° triangle
RideAnS [48]

Answer:

5

Step-by-step explanation:

5 0
3 years ago
HELP ME PLS<br> GRADES ARE DUE TODAY
damaskus [11]

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

Most of this exercise is looking at different ways to identify the slope of the line. The first attachment shows the corresponding "run" (horizontal change)  and "rise" (vertical change) between the marked points.

In your diagram, these values (run=1, rise=-3) are filled in 3 places. At the top, the changes are described in words. On the left, they are described as "rise" and "run" with numbers. At the bottom left, these same numbers are described by ∆y and ∆x.

The calculation at the right shows the differences between y (numerator) and x (denominator) coordinates. This is how you compute the slope from the coordinates of two points.

If you draw a line through the two points, you find it intersects the y-axis at y=4. This is the y-intercept that gets filled in at the bottom. (The y-intercept here is 1 left and 3 up from the point (1, 1).)

4 0
3 years ago
Can anyone help with this? I will mark you as brainliest!
Pavel [41]

Answer:

1.25x10^2

Step-by-step explanation:

5x5^2

5x5x5=125

125=1.25x10^2

Therefore 5x5^2=1.25x10^2

7 0
3 years ago
Read 2 more answers
Determine the volume of the figure. Use 3.14 for π. Round your answer to the nearest tenth. Show all of your work.
Ostrovityanka [42]

Answer:

1985 cubic units (written as un. with the cubed exponent)

Step-by-step explanation:

First, you find the volume of the cylinder

Here's the formula:

V=\pi r^{2}h\\V=volume\\r=radius\\h=height

Now, you plug in and solve.

V=(3.14)(7.2^{2})(7.4)\\V=(3.14)(51.84)(7.4)\\V=(162.7776)(7.4)\\V=1204.55424\\rounded:\\V=1204.6

Then, you find the volume of the dome.

Here's the formula:

volume/of/a/sphere=\frac{4}{3}\pi r^{3}\\volume/of/a/dome:\\V=\frac{2}{3}\pi r^{3} \\V=volume\\r=radius

Now, you just plug in and solve.

V=(\frac{2}{3})(\pi)(r^{3})\\V=(\frac{2}{3})(3.14)(7.2^{3})\\V=(\frac{2}{3})(3.14)(373.248)\\V=(2.093)(373.248)\\V=781.208064\\rounded:\\V=781.2

Finally, you add them together, and there's your answer!

1204.6+781.2=1985.8

Hope this helped!

<em>brainliest?</em>

8 0
3 years ago
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