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3 years ago

HELP PLEASE BE QUICK

Mathematics

2 answers:

mart [117]3 years ago

4 0

Answer:

Step-by-step explanation:

Using the sine ratio in the right triangle

sin40° = $\frac{opposite}{hypotenuse}$ = $\frac{AC}{AB}$ = $\frac{AC}{7}$

Multiply both sides by 7, thus

AC = 7sin40° → A

laiz [17]3 years ago

3 0

Answer:

Step-by-step explanation:

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Can someone help? I suck at this

Usimov [2.4K]

Answer:

23 cm squared

Step-by-step explanation:

Split the shape into two shapes.

Shape one:

5 x 3 = 15 cm squared

Shape two:

7 - 3 = 4 (length of a side of the second shape)

4 x 2 = 8 cm squared

15 + 8 = 23 cm squared

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3 years ago

Never mind no one will answer it

Vinil7 [7]

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4 years ago

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Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease

Ket [755]

Answer: There are approximately 853827 new cases in 6 years.

Step-by-step explanation:

Since we have given that

Initial population = 570000

Rate at which population decreases is given by

$\frac{2}{3}$

Now,

First year =570000

Second year is given by

$570000\times (\frac{1}{3})$

Third year is given by

$570000(\frac{1}{3})^2$

so, there is common ratio ,

it becomes geometric progression, as there is exponential decline.

so,

$570000,570000\times \frac{1}{3},570000\times( \frac{1}{3})^2,......,570000\times (\frac{1}{3})^6$

a=570000

common ratio is given by

$r=\frac{a_2}{a_1}=\frac{1}{3}$

number of terms = 6

Sum of terms will be given by

$S_n=\frac{a(1-r^n)}{(1-r)}$

We'll put this value in this formula,

$S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16$

So, there are approximately 853827 new cases in 6 years.

6 0

3 years ago

7/8=?/48 a.6 b.13 c.1 d.42

ryzh [129]

D) you just multiply the numerator and denominator by 6 to get an equivalent fraction

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3 years ago

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Point P is the midpoint of DE.

Leto [7]

Answer:A.4

Step-by-step explanation:

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3 years ago