Need help please. Need the answer now

Answer:

angle 7and 8

angle 9 and 6

Step-by-step explanation:

Answer:

x ≥ 10

Step-by-step explanation:

So put a filled-in dot on 10 and an arrow going to the right

Answer: x ≥ 10

Step-by-step explanation: i took the test

Given:

The measure of three sides of a triangle are 8, 7 and 14.

To find:

The measure of the angle opposite the side of length 8.

Solution:

According to the Law of Cosine:

[tex]\cos A=\dfrac{b^2+c^2-a^2}{2bc}[/tex]

Let a=8, b=7 and c=14, then by using Law of Cosine, we get

[tex]\cos A=\dfrac{7^2+14^2-8^2}{2(7)(14)}[/tex]

[tex]\cos A=\dfrac{49+196-64}{196}[/tex]

[tex]\cos A=\dfrac{181}{196}[/tex]

Taking cos inverse on both sides.

[tex]A=\cos^{-1}\dfrac{181}{196}[/tex]

[tex]A=22.561328[/tex]

[tex]A\approx 22.6[/tex]

Therefore, the measure of the angle opposite the side of length 8 is 22.6 degrees.

Answer:

Bill should use 4.5 pounds of the candy costing 45 cents and 2.5 pounds of the candy costing 65 cents.

Step-by-step explanation:

With the information provided, you can say that the sum of the pounds of each type of candy is equal to 7, which can be expressed as:

x+y=7

Also, the statement indicates the 7 pound box costs $3.65 and you can say that the sum of the results of multiplying the price of each candy for the number of pounds is equal to $3.65, which is:

0.45x+0.65y=3.65

You have the following equations:

x+y=7 (1)

0.45x+0.65y=3.65 (2)

Now, you have to solve for x in (1):

x=7-y (3)

Then, you have to replace (3) in (2):

0.45(7-y)+0.65y=3.65

3.15-0.45y+0.65y=3.65

0.20y=0.50

y=0.50/0.20

y=2.5

Finally, you can replace the value of y in (3) to find x:

x=7-y

x=7-2.5

x=4.5

According to this, the answer is that Bill should use 4.5 pounds of the candy costing 45 cents and 2.5 pounds of the candy costing 65 cents.

Answer:

This would equal sec (B)

Step-by-step explanation:

90 Minutes i think

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Answer: 24 bottles

Step-by-step explanation: 1 gallon is 8 pints so 8*3 is 24 so 24 bottles

2/x+4=3^x+1It's too short. Write at least 20 characters to explain it well.

Answer:

The area of the rectangle in terms of x :

S = ( 5x +2 )(3x-4) = 15x²−14x−8

=> x1=−2/5, x2= 4/3

Step-by-step explanation:

Answer:

C ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Answer:

2.954545454

Step-by-step explanation:

65/22 = 65 divided by 22. That is how many times 22 can go into 65

A decimal number has a decimal point in it. That is a whole number and some fraction that could be in tenths or otherwise.

65 is the numerator,

22 is the denominator

Using a calculator

65/22 = 2.9545454

Answer: 1210

Step-by-step explanation:

Answer:

3.84, and lower. These are correct

Step-by-step explanation:

I did the test but I am not sure which is the answer for the first one. It’s is NOT 2.6

Answer:first blank is 2.2

Step-by-step explanation:

you find the mean of the data which is 8. Then you subtract every data point from 8, add them up and find the mean of the new numbers,

Answer:

I think c, - 1.8 is the answer

-1.6 (c)

My reasoning behind this is that the number would be logical considering the fact that the point is close to 0. Also, I ruled out the other choices, and here's how I did it:

I know that A is not the answer because that would make it farther back on the number line and the point B is closer to 0 than it is to 3.8 so, I know that A is not correct.

I know that B is not the answer because -5.23 would be farther behind point A which rules it out entirely.

I know that D is not the answer because 0.1 would be right after point c (0) meaning that the point can be ruled out right away.

That leaves the only logical answer to be C because it is closer to 0 but still in between points A and B.

Hope this helps and have a nice day.

-R3TR0 Z3R0

Answer:

9y

Step-by-step explanation:

9 times y = 9y

product means multiply

Answer: the answer is 4.08

Step-by-step explanation:

Answer:

4.08

Step-by-step explanation:

2.29+2.59-0.50-0.30 is equal to 4.08

it's just addition and subtraction haha

Answer:

Submarine submerges at the rate of =5m/min

descend starts from = 20m

submarine have to reach = -250m

Distance between above sea level to below sea level = 250 + 20 = 270m

time taken to reach 270 m = 270/5= 54 minutes

Step-by-step explanation:

Hope this helps:)

3x-2y+4z-x+5y+3x-2y+4z-x+z

First, reorder(I put the like terms in parenthesis to help you see the work better).

(3x+3x-x-x)+(5y-2y-2y)+(4z+4z+z)

Now, we add/subtract like terms.

(6x-2x)+(5y-4y)+(8z+z)

Lastly, we combine.

4x+y+9z

---

hope it helps

Answer:

These are confusing Beth , b/c you have to remember that they will add to 100%

Step-by-step explanation:

so

green = 3*  yellow

100% = green + yellow + 35% + 25%

100% = 3* yellow + yellow +60%

40% = 4* yellow

10% = yellow

30% = green

there are 14 purples in the bag , which is 35% of total

14/.35 = 40

there are a total of 40 pins

so

4    are yellow  (10% of 40  or 40* 0.1)

12 are green    (30% of 40  or 40*0.3)

14  are purple  (35% of 40 or 40*0.35)

10  are grey  (25% of 40  or 40*0.25 )

see?  : |

Answer:

It is better to buy 20 g of flour 3 for 3.50

Step-by-step explanation:

It is given that 20g of 3 for 3.50

It means 3 packets of 20 g is 3*20 =60

So, 60g  is for 3.50

So, 1 g =[tex]\frac{3.5}{60}[/tex]=0.05833 per gram.

Now, let's find unit rate for 40 g of 2 for 9.

2 packets of 40 gram = 2* 40 =80 grams

So, 80 grams costs 9

So, 1 gram =[tex]\frac{9}{80}[/tex] =0.1125

So, it is better to buy 20 g of flour 3 for 3.50

Answer:

CD overbar is congruent to XY overbar

The area of the triangle is:

                                         [tex]\Large\displaystyle\text{$\begin{aligned}A\triangle &= \dfrac{21+7\sqrt{15}}{2}\\ \\A\triangle &\approx 24.055\\ \\\end{aligned}$}[/tex]

You can easily find the area of a triangle using the formula:

                                         [tex]\Large\displaystyle\text{$\begin{aligned}A\triangle = \dfrac{bh}{2}\end{aligned}$}[/tex]

Where h is the height of the triangle, and b the base.

Looking at the figure we can see that h = 7, but we need to discover the base, we know that the base is:

                                               [tex]\Large\displaystyle\text{$\begin{aligned}b = 3 + x\end{aligned}$}[/tex]

Where:

                                            [tex]\Large\displaystyle\text{$\begin{aligned}8^2 &= x^2 + 7^2\\ \\x^2 &= 8^2 - 7^2 \\ \\x^2 &= 64 - 49\\ \\x^2 &= 15\\ \\x &= \sqrt{15}\end{aligned}$}[/tex]

Therefore, our base length is:

                                              [tex]\Large\displaystyle\text{$\begin{aligned}b &= 3 + x\\ \\b &= 3 + \sqrt{15}\\ \\\end{aligned}$}[/tex]

Then we can just apply the formula for the area:

                                        [tex]\Large\displaystyle\text{$\begin{aligned}A\triangle &= \dfrac{(3+\sqrt{15})\cdot 7}{2}\\ \\A\triangle &= \dfrac{21+7\sqrt{15}}{2}\\ \\A\triangle &\approx 24.055\\ \\\end{aligned}$}[/tex]

I hope you liked it

Any doubt? Write it in the comments and I'll help you

Answer:fhhxijcubv

Step-by-step explanation:

Cvhgghjbghv

Answer:

The initial mass of the sample was 16 mg.

The mass after 5 weeks will be about 0.0372 mg.

Step-by-step explanation:

We can write an exponential function to model the situation.

Let the initial amount be A. The standard exponential function is given by:

[tex]P(t)=A(r)^t[/tex]

Where r is the rate of growth/decay.

Since the half-life of Palladium-100 is four days, r = 1/2. We will also substitute t/4 for t to to represent one cycle every four days. Therefore:

[tex]\displaystyle P(t)=A\Big(\frac{1}{2}\Big)^{t/4}[/tex]

After 12 days, a sample of Palladium-100 has been reduced to a mass of two milligrams.

Therefore, when x = 12, P(x) = 2. By substitution:

[tex]\displaystyle 2=A\Big(\frac{1}{2}\Big)^{12/4}[/tex]

Solve for A. Simplify:

[tex]\displaystyle 2=A\Big(\frac{1}{2}\Big)^3[/tex]

Simplify:

[tex]\displaystyle 2=A\Big(\frac{1}{8}\Big)[/tex]

Thus, the initial mass of the sample was:

[tex]A=16\text{ mg}[/tex]

5 weeks is equivalent to 35 days. Therefore, we can find P(35):

[tex]\displaystyle P(35)=16\Big(\frac{1}{2}\Big)^{35/4}\approx0.0372\text{ mg}[/tex]

About 0.0372 mg will be left of the original 16 mg sample after 5 weeks.

Answer:

The unit rate will be amount ÷ price

Thus,

3÷4.50

⇒ 0.66..........

And this means 0.66 will be the range.

Answer:

sorry i did my math wrong its...I think its 84 meters