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irina [24]
3 years ago
11

If a+3b=13 and a+b=5 the value of b is

Mathematics
1 answer:
hoa [83]3 years ago
7 0

Answer:b=4

Step-by-step explanation:

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what is the probability of choosing a green marble from a jar containing five red, 6 green, and four blue marbles​
slega [8]

Answer:

6/15

Step-by-step explanation:

add all the marbles up and you get 15

6 green ones out of 15 marbles

5 0
3 years ago
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FAST!! Evaluate tan60/cos45<br> √6<br> √3/2<br> √2/3<br> 1√6
evablogger [386]

Answer:

\frac{\tan 60\degree}{\cos45 \degree}= \sqrt{6}

Step-by-step explanation:

We want to evaluate

\frac{\tan 60\degree}{\cos45 \degree}

We use special angles or the unit circle to obtain;

\frac{\tan 60\degree}{\cos45 \degree}=\frac{\sqrt{3}}{\frac{\sqrt{2}}{2}}

This implies that;

\frac{\tan 60\degree}{\cos45 \degree}=\sqrt{3}\div \frac{\sqrt{2}}{2}

\frac{\tan 60\degree}{\cos45 \degree}=\sqrt{3}\times \sqrt{2}

\frac{\tan 60\degree}{\cos45 \degree}= \sqrt{6}

4 0
3 years ago
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Find the slope of the line that asses through the pair of oints (17,11) and (21,19)
Ludmilka [50]

Answer:

The slope of the two points is 2. (8/4)

3 0
3 years ago
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The diagram shows part of a number line.Two of the fractions are not complete. Write the missing numerator in each box
Tcecarenko [31]
The first numerator is 3 and the second is 17 not 2
4 0
3 years ago
Please help me how to figure this out I’m trying to figure out the area ASAP please
Natasha2012 [34]

Answer:

1230.88m^{2}

Step-by-step explanation:

Shown is one-fourth of a circle. Also, according to the picture, the radius is 28 meters.

The area for a whole circle is 2\pi r^{2}.

Using that information, we can find the area as if the circle was whole instead of just the fourth.

2(\pi)(28m)^2 = 2(3.14)(784m^{2} ) = 4923.52m^{2}

Now that we know the area of the whole circle, we just have to divide it by four to find the area of the fourth of the circle.

4923.52m^{2}  / 4 = 1230.88m^{2}

That means that the area of the shape shown is 1230.88m^{2}.

I hope this helps!

4 0
3 years ago
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