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ryzh [129]
3 years ago
10

How do I solve these problems that I took a picture of ?

Mathematics
2 answers:
fgiga [73]3 years ago
6 0
22. Step by step: 2x^2+5x-3=0
factor the left side
(2x-1)(x+3)=0
set the factors to equal zero
2x-1=0 and x+3=0
x=1/2           x=-3

23. Use same technique.
3x^2-13x-10=0
factor the left side once more
(3x+2)(x-5)=0
set factors to zero
3x+2=0 and x-5=0
x=-2/3          x=5
Inessa05 [86]3 years ago
4 0
Her work is correct! :)
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Find the length of STV in the figure.
o-na [289]

Answer: The length of STV is about 76.83 in.

Step-by-step explanation:

The length of an arc is given by :-

l=\frac{\theta}{360^{\circ}}\times2\pi r, where r= radius of the cirle, \theta is the central angke made by arc.

As per given , Radius of the circle : r= 20 in

Central angle of arc SCV = 140^{\circ}

Then, Central angle of arc SCV = 360^{\circ}-140^{\circ}=220^{\circ}

Then, the length of the arc STV =

l=\frac{220^{\circ}}{360^{\circ}}\times2(\frac{22}{7}) (20)\\\\=\frac{11}{18}\times\frac{880}{7}\\\\=76.8253968254\approx76.83\text{ in.}

Hence, the length of STV is about 76.83 in.

5 0
4 years ago
If someone knows the answer please help
pickupchik [31]

The correct answer is D. D'(1, 5), E'(-1, 3), F'(-1, -4), G'(1, -2).

It's because of this: You need to calculate the distances, and they are in this case symmetric, so you look how far is from one side, and it will be the same on the other side. When you put it on graph, the coordinates are clear and the correct answer is D.

7 0
3 years ago
What is 329 to the nearest 100
yuradex [85]
Here we will tell you what 329 is rounded to the nearest hundred and also show you what rules we used to get to the answer. First, 329 rounded to the nearest hundred is:

300

<span>Remember, we did not necessarily round up or down, but to the hundred that is nearest to 329.</span>
5 0
4 years ago
Read 2 more answers
X+3menor que 8 qual o resultado
elixir [45]

x+3<8

8-3 =5

 X<5

 any number less than 5 will work

7 0
4 years ago
Which describes the calculations that could be used to solve this problem? Lauren has 42 muffins to pack into boxes and bags. Sh
Marat540 [252]
The correct answer is D, 'Subtract 42 - 12. Then divide the difference by 3'. Lauren has 42 muffins, and she can put 12 of them into a box, leaving her with 30 muffins to fit into bags. If she can fit 3 muffins in each bag, and she wants to know how many bags she needs, then she needs to divide 30 by 3 to get 10. This means that she will need 10 bags of 3 muffins to completely pack 30 muffins. She started with 42, but 12 of those fit into the original box, so we don't have to worry about it.

Hope this helps!
6 0
3 years ago
Read 2 more answers
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