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Bumek [7]
3 years ago
15

I need the answer this quiz. I wasnt at school for a week and I forgot how to do thiz. I need the answer

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0
All you do is calculate the area of a whole big triangle
estimate
1 3/4 =2
base =  2(2) + 2(1) = 6
height = 2

A = 1/2(6)(2)
A = 12/2
A = 6

answer is A
6 m^2
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What is the perimeter of a rhombus whose diagonals measure 42cm and 56cm?
Trava [24]

Answer:

676

Step-by-step explanation:

d1×d2/2

42×56/2

1352/2=676

please check it by doing again

3 0
3 years ago
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Someone help me please?! Math problem!!!
Gala2k [10]

Answer:

y  = 4/5x  - 9/5

Step-by-step explanation:

4x - 5y = 9  to solve for y you get it by itself.

-4x          -4x   minus 4x from both sides

-5y  = - 4x + 9

/-5            /-5   Divide both sides by 5

 y  = 4/5x  - 9/5   because -4/-5 is 4/5 and 9/-5 is - 9/5


5 0
3 years ago
Using your knowledge of exponential and logarithmic functions and properties, what is the intensity of a fire alarm that has a s
Ierofanga [76]

Option B:

I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}

Solution:

Given sound level = 120 decibel

To find the intensity of a fire alarm:

$\beta=10\log\left(\frac{I}{I_0} \right)

where I_0=1\times10^{-12}\ \text {watts}/ \text m^2}

Step 1: First divide the decibel level by 10.

120 ÷ 10 = 12

Step 2: Use that value in the exponent of the ratio with base 10.

10^{12}

Step 3: Use that power of twelve to find the intensity in Watts per square meter.

$10^{12}=\left(\frac{I}{I_0} \right)

$10^{12}=\left(\frac{I}{1\times10^{-12}\ \text {watts}/ \text m^2} \right)

Now, do the cross multiplication,

I=10^{12}\times1\times\ 10^{-12} \ \text {watts}/ \text m^2}

I=1\times\ 10^{12-12} \ \text {watts}/ \text m^2}

I=1\times\ 10^{0} \ \text {watts}/ \text m^2}

I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}

Option B is the correct answer.

Hence I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}.

5 0
3 years ago
40 points and brainliest get it before it gets claimed.
denis23 [38]

Answer:

yuh

Step-by-step explanation:

4 0
3 years ago
In a computer game, a bird flies at a height of 1,281 feet. At the same time, a fish swims 282 feet below sea level. What is the
Nana76 [90]

Answer:

The difference is 1,563 feet.

Step-by-step explanation:

1,281+282=1,563

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