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4 years ago

Please help me need help ASAP don’t know how to solve

Mathematics

1 answer:

salantis [7]4 years ago

3 0

Using the triangle similarity postulates, you can verify that

$\cfrac{12}{y}=\cfrac{y}{4}\\ \\ \Rightarrow y^2=48\\ \\ \Rightarrow y=\sqrt{48}=4\sqrt{3}$

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A recipe that serves 6 uses 1 and 1/4 cups of flower. How many cups are needed to serve 8?

Zigmanuir [339]

1(1)/(4)-:3= 5/12

5/12 of a cup or 0.146 with a bar on top because the 6 goes on forever.

6 0

3 years ago

These are my last points. Please answer this correctly take your time for this.. Janel bought 5.25 pounds of gucky worms for $7.

Novay_Z [31]

Answer:

a. $1.40

b. $8.40

c. 15 lbs

that's all i know but i hope this helps!

3 0

3 years ago

How much is 1638074%283363+7336-736362886 is?

ArbitrLikvidat [17]

$- 735.730.157..58824$
the decimals are commas and the double decimal is a real decimal

7 0

4 years ago

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

frutty [35]

Answer:

$sin(a+b)=\frac{4\sqrt{21}+2\sqrt{65}}{45}$

Step-by-step explanation:

we are given

$sin(a)=\frac{4}{9}$

$sin(b)=\frac{2}{5}$

Firstly, we will draw triangle

we get

$cos(a)=\frac{\sqrt{65} }{9}$

$cos(b)=\frac{\sqrt{21} }{5}$

now, we can sue formula

$sin(a+b)=sin(a)cos(b)+cos(a)sin(b)$

now, we can plug values

$sin(a+b)=\frac{4}{9}\times \frac{\sqrt{21} }{5}+\frac{\sqrt{65} }{9}\times \frac{2}{5}$

now, we can simplify it

$sin(a+b)=\frac{4\sqrt{21}+2\sqrt{65}}{45}$

6 0

3 years ago

a scientist notes that the number of bacteria in a colony is 50.3 hours later, she notes that the number of bacteria has increas

sergejj [24]

It will take 5.83 hours for the bacteria to reach 1119.

<h3>What is exponential Growth ?</h3>

Exponential growth is when the quantity increases according to the function

$P_t = P_0 e^{ kt}$

It is given in the question that

Initial number of Bacteria is 50

After 3 hours the bacteria has increased to 80

The bacterial growth is an exponential growth

$P_t = P_0 e^{ kt}$

$80 = 50 e^{ k * 3}$

Applying log on both sides

1.6 = 3*k

k = 1.6/3

k = 0.533

if this rate of growth continues, how much more time will it take for the number of bacteria to reach 1119

$1119 = 50e^{0.533* t}\\\\3.18 = 0.533 *t\\\\5.83 = t$

Therefore it will take 5.83 hours for the bacteria to reach 1119.

To know more about exponential growth.

brainly.com/question/11487261

#SPJ1

6 0

2 years ago

Read 2 more answers