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Alexus [3.1K]
3 years ago
11

Write an expression to represent four more than the problem of three and a number z

Mathematics
1 answer:
kicyunya [14]3 years ago
8 0

Answer:

If the "problem of 3 and a number z" is multiplying: 4+(3z)

If it's about adding: 4+(3+z)

Step-by-step explanation:

Scenario A: If it's 3 and z, then that means it's 3z, and we're adding 4, so it's 4+(3z) (make sure to put () around the 3z!)

Scenario B: If 3 and z is also 3+z, then the equation is 4+(3+z) (also use () on this too!)

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Angle PSR measures 99°.
Maru [420]

Answer:

45

Step-by-step explanation:

7 0
3 years ago
Krystal can wax a floor in 16 minutes. Perry helped her and it took 5.76 minutes. How long would it take perry to do it alone?
finlep [7]
<span>Krystal's rate = 1 floor in 16 min. = 1/16 floors per min.

Working together their rate = 1 floor in 5.76 min. = 1/5.76 floors per min.

We need to determine Perry's rate, so we need to equate their combined rate with the sum of the individual rates.

Let Perry's time = x

In equation form, we can write:
1/16 + 1/x = 1/5.76
Solve for x:

(x+16)/16x = 1/5.76 -> 5.76(x+16) = 16x -> 10.24x = 92.16 -> x = 9

So, Perry would take 9 mins. to do the floor alone.

I hope this helped!
Please Rate & Thank!
Please mark as Brainliest!

Have a wonderful night! : )</span>
8 0
3 years ago
The radius of a circle with area A is approximately √A/3. The area of a circular mouse pad is 54 square inches. Estimate its rad
Gnesinka [82]

Answer:

4.2

Step-by-step explanation:

First I did 54 divided by 3 which is 18.  Then I found the square root of 18.

3 0
2 years ago
Find angle D if angle B = 50
Mariana [72]
<h3>Answer:  80 degrees</h3>

============================================================

Explanation:

I'm assuming that segments AD and CD are tangents to the circle.

We'll need to add a point E at the center of the circle. Inscribed angle ABC subtends the minor arc AC, and this minor arc has the central angle AEC.

By the inscribed angle theorem, inscribed angle ABC = 50 doubles to 2*50 = 100 which is the measure of arc AC and also central angle AEC.

----------------------------

Focus on quadrilateral DAEC. In other words, ignore point B and any segments connected to this point.

Since AD and CD are tangents, this makes the radii EA and EC to be perpendicular to the tangent segments. So angles A and C are 90 degrees each for quadrilateral DAEC.

We just found angle AEC = 100 at the conclusion of the last section. So this is angle E of quadrilateral DAEC.

---------------------------

Here's what we have so far for quadrilateral DAEC

  • angle A = 90
  • angle E = 100
  • angle C = 90
  • angle D = unknown

Now we'll use the idea that all four angles of any quadrilateral always add to 360 degrees

A+E+C+D = 360

90+100+90+D = 360

D+280 = 360

D = 360-280

D = 80

Or a shortcut you can take is to realize that angles E and D are supplementary

E+D = 180

100+D = 180

D = 180-100

D = 80

This only works if AD and CD are tangents.

Side note: you can use the hypotenuse leg (HL) theorem to prove that triangle EAD is congruent to triangle ECD; consequently it means that AD = CD.

5 0
3 years ago
Write the following as a single sine or cosine function of an angle
mezya [45]

Answer:

idk

Step-by-step explanation:

i wish i did

8 0
3 years ago
Read 2 more answers
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