All categories

2 years ago

The equation

Mathematics

1 answer:

faust18 [17]2 years ago

7 0

Answer:

best approximate is 78 F. to find x, count number of hours between 5 am and 2 pm (which is 9). Substitute 9 into the equation and solve. hope this helps!

Step-by-step explanation:

$y = - 0.37 {x}^{2} + 6.15x + 52.3 \\ y = - 0.37 ({9}^{2} ) + 6.15(9) + 52.3 \\ y = - 0.37(81) + 6.15(9) + 52.3 \\ y = - 29.97 + 55.35 + 52.3 \\ y = 77.68$

You might be interested in

Confused on number 10. I put one solution, but I don’t know if it’s right. I got

egoroff_w [7]

It is no answer, because when you get 12x + 48 = 48 + 12x, they cancel each other out.

8 0

3 years ago

A flea weighs 8 decigrams, and an ant weighs 3 milligrams. How much more does a flea weigh than an ant?

Pavel [41]

Decigrams are 100 times bigger than milligrams, so convert 8 decigrams to 800 milligrams. Than subract: 800-3= 797

The flea weighs 797 milligrams more than the ant.

5 0

3 years ago

Integrate sin²2x cos²2x dx

DochEvi [55]

$\sin^2x=\dfrac{1-\cos2x}2$
$\cos^2x=\dfrac{1+\cos2x}2$

From the identities above, you have

$\sin^22x\cos^22x=\dfrac{(1-\cos4x)(1+\cos4x)}4=\dfrac{1-\cos^24x}4$

Applying once more, you have

$\dfrac{1-\cos^24x}4=\dfrac{1-\dfrac{1+\cos8x}2}4=\dfrac{1-\cos8x}8$

So,

$\displaystyle\int\sin^22x\cos^22x\,\mathrm dx=\frac18\int(1-\cos8x)\,\mathrm dx=\frac x8-\frac1{64}\sin8x+C$

7 0

2 years ago

MP.7 USE STRUCTURE Helen uses 0.12 kilogram of nuts in each batch of granola that she makes . If she makes 2.5 batches, how many

pishuonlain [190]

Answer: The answer should be .30 kilograms of nuts

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Volume question

ioda

Answer:

The answer is 61.4 L

Step-by-step explanation:

Using the formula of cuboid, V = l×b×h, to find the total amount of water contained :

l = 120cm

b = 40cm

h = 15cm

V = 15×120×40

= 72 000cm³

= 72 L

It is given that she uses 10.6L for shower. Then calculate the remaining water by substracting 10.6L from the original amount of water :

remaining = 72 - 10.6

= 61.4 L

8 0

3 years ago