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2 years ago

Answer for these! Please quickly

Mathematics

1 answer:

hram777 [196]2 years ago

5 0

Answer:

1: 233 (E)

2: 10,920 (C)

3: 241.87 (F)

4: 12600 (B)

Step-by-step explanation:

Use the Pythagorean Theorem to find the hypotenuse (the missing side length):

$a^{2} + b^{2} = c^{2} \\c = \sqrt{a^{2} + b^{2}}$

To find area of triangle:

A = 1/2 • base • height

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The solutions to the equation 2x2+x-1=2 are X= -3/2 or x=

Brilliant_brown [7]

Answer:

positive 3/2

Step-by-step explanation:

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2 years ago

I need help with #39-42, please explain.

shusha [124]

For question 39 & 40, we need to use the below equation to complete the sentence

$l=m\sqrt{n}$

Question 39:

When ' n ' increase, the $\sqrt{n}$ will also increase and that multiplied with constant ' m ', the l will also increase.

Solution for question 39:

As $n$ increases and $m$ stays constant , $l$ increases

-------

Question 40:

Solving the equation for m, we get

$l = m\sqrt{n} \\ \\ m=\frac{l}{\sqrt{n}}$

When ' l ' increases, the numerator increase, the denominator stays constant because 'n' stays constant, for this condition, the fraction increases.

Solution for question 40:

As $l$ increase and $n$ stays constant, $m$ increases

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For question 41 & 42, we need to use the below equation to complete the sentence

$r=s^2/t^2$

Question 41:

When $s$ is triped, the equation will be...

$r=(3s)^2/t^2=\frac{3^{2}s^{2}}{t^2} =9s^2/t^2$

Solution for question 41:

If $s$ is tripled and $t$ stays constant, $r$ is multiplied by 9

--------

Question 42:

When t is doubled, the equation will be...

$r=s^2/(2t)^2=\frac{s^2}{2^2 \cdot t^2}=\frac{s^2}{4t^2}\\ \\ r=0.25s^2/t^2 \; \; (or) \; \; \frac{1}{4} \cdot \frac{s^2}{t^2}$

Solution for 42:

If $t$ doubled and $s$ stays constant, $r$ is multiplied by 1/4 or 0.25

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3 years ago

Solve 2tan(x)cos^2(x)=1 algebraically

deff fn [24]

X= pi/4 +k(pi)
(This may not be correct sorry)

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2 years ago

Mrs. Moore has 98 pieces of candy to split among s students. Which expression shows how many pieces of candy each student will r

Nimfa-mama [501]

Answer:
I'm assuming that the s stands for 5 so it would be 19.6
Step-by-step explanation:

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2 years ago

Stan ran 4 7/10 miles, which was 1 3/10 fewer miles than Matt ran. Four students wrote and solved equations to find m, the numbe

nydimaria [60]

Answer: Miles ran by Matt = 6 miles

Step-by-step explanation: Miles ran by Stan = 4 7/10

i.e. 1 3/10 miles less than Matt.

∴ Miles ran by Matt = 4 7/10 + 1 3/10 = 60/10 = 6miles

∴ Miles ran by Matt = 6 miles

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2 years ago

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