What is the value of -2.86 + 4.15 - 16.43?​

Answer:

B

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

Answer:

B

Step-by-step explanation:

Just by looking at it, you could easily decide that it would either b B or C because the numbers did not change.

So I would say that it is B because it eliminates the negative right away.

Commutative property is when you change the order of the numbers the answer would not change.

Answer:

It's (very roughly) 12 hours from one high tide to the next, and of course the same for low tides. That's because the tides produced when the Moon is directly overhead or in the opposite direction are the same. Same with two low tides, since there are two tides a day (both low and high).

Answer:

Because the Earth rotates through two tidal bulges every lunar day, coastal areas experience two high and two low tides every twenty-four hours and fifty minutes. High tides occur twelve hours and twenty-five minutes apart. It takes six hours and 12.5 minutes for the water at the shore to go from high to low, or from low to high.

Step-by-step explanation:

because I said

please mark me brainliest

Answer:

6.63

Step-by-step explanation:

Since you are using a right triangle, you  are  going to be doing the pythagorean theorem. [tex]a^{2} +b^{2} =c^{2}[/tex] where a  and  b are the legs and c is the slanted side/hypotunse. Let plug it in.

[tex]a^{2} +10^{2} =12^{2}[/tex]

[tex]a^{2}[/tex]+100=144

[tex]a^{2}[/tex]=44

sqr root of 44 is [tex]2\sqrt{11}[/tex] which is about 6.63

Step-by-step explanation:

Equation is missing, without the equation to go with the table, you can't find y.

Answer:

8m+12 would be the equation.

Step-by-step explanation:

Answer:

Step-by-step explanation:

The first table represents a linear function because:

The second table is not linear as:

Answer:

angle A and C are both Equal and sides BC and BA of the triangle are congruent

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given triangle LNK

Interior angles sum to 180°

Answer:

y = -8/9

Step-by-step explanation:

2 ×(7) - 9 y = 22

14 - 9y = 22

9 y = -8

y = -8/9

Complete Question

In ΔUVW, w = 9 cm, v = 22 cm and ∠V=136°. Find all possible values of ∠W, to the nearest 10th of a degree.

Answer:

16.5°

Step-by-step explanation:

In ΔUVW, w = 9 cm, v = 22 cm and ∠V=136°. Find all possible values of ∠W, to the nearest 10th of a degree.

We solve using Sine rule formula

a/sin A = b/sin B

We are solving for angle W

∠V=136°

Hence:

22 /sin 136 = 9 /sin W

Cross Multiply

22 × sin W = sin 136 × 9

sin W = sin 136 × 9/22

W = arc sin [sin 136 × 9/2.2]

W = 16.50975°

W = 16.5°

Answer:

96%

Step-by-step explanation:

To have an average of 90 for 4 exams, you know that the sum of the scores on all 4 exams would be 90 * 4 = 360. The sum of the first three scores is 88 + 92 + 84 = 264.

The last thing you have to do is 360 - 264 = 96 because then you know the score he has to get is 96 for an average of 90 on all four exams.

Answer:

Do 2.78×103 = 286.34

Step-by-step explanation:

In standard form:

200+80+6+0.3+0.04

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Answer:

The surface area is 240 cm^2

Step-by-step explanation:

The surface area is the sum of all the areas of the shapes present

we have two rectangles of measure 7 cm by 12 cm

A base rectangle of 4 cm by 12 cm

Two side triangles of base 4 cm and height 6 cm

Area of the rectangles is l * b

Area of the triangles is 1/2 * b * h

Thus, we have that;

(7 * 12) * 2 ) + 2 * (1/2 * 4 * 6) + (4 * 12)

= 168 + 24 + 48 = 240 cm^2

Answer:

slope: 1 y intercept is -5

Step-by-step explanation:

Answer:

slope is 4/5 and yintercept is -5

Step-by-step explanation:

Multiply 0.625/1 by 1000/1000 to get 625/1000. Reducing we get 5/8  

Answer: x=4, y=-2

Step-by-step explanation:

we can use the elimination method to eliminate one term to find x. Let multiply the top system by 4 then add the second system to eliminate the variable.

4(3x-y=14)

12x-4y=56

5x+4y=12

17x=68

x=4

Since we know x=4, let plug this back in to one of the system to find y.

5(4)+4y=12

20+4y=12

4y=-8

y=-2

Answer:

−6.5w−0.8

Step-by-step explanation:

4.2+−5+−6.5w

Combine Like Terms:

=4.2+−5+−6.5w

=(−6.5w)+(4.2+−5)

=−6.5w+−0.8

Brainless please

Answer:

B.105

Step-by-step explanation:

To solve you have to find the volume

The equation is length*width*height=volume

7*3=21

21*5=105

Answer:

a+1.5>6 correct

Step-by-step explanation: -a+1.5>-6  incorrect

Answer:

Let's use the variable y to represent the number of years passed since the first year.

The population on the first year (y = 0) was 800

The population in the second year (y = 1) was 600.

The ratio in which the population decreased can be calculated as:

R = 600/800 = 0.75

This means that 600 is the 75% of 800, this also means that between the first year and the second year, the population decreased by the 25%

Now let's look at the ratio between the second and third year (y = 2), the population the third year was 450

Now the ratio is:

R = 450/600 = 0.75

Same as before, then we already can see that the population will decrease by 25% each year.

The generic exponential decay equation is:

f(y) = A*(1  - r)^y

where:

A = initial population, in this case, is 800

y = our variable, in this case, represents the number of years

r = the amount that decreases per each unit of our variable, this must be written in decimal form. In this case, we know that the population decreases by 25% each year, and 25% written in decimal form is 0.25

Also, (1 - r) = R, where R is the ratio we found earlier.

To do this, we just divide 25% by 100% to get (25%/100% = 0.25)

Then our equation will be:

f(y) = 800*(1 - 0.25)^y

f(y) = 800*( 0.75)^y

1) We want to predict when the population will be 200.

to do this, we set:

f(y) = 200 = 800*( 0.75)^y

and solve it for y.

(200/800) = 0.75^y

(1/4) = 0.75^y

Now we can use the relationship:

Ln(a^x) = x*ln(a)

Then let's apply Ln( ) in both sides to get

ln(1/4) = y*ln(0.75)

ln(1/4)/ln(0.75) = y = 4.8 years.

This means that 4.8 years after the first year, the population will be around 200.

2) The population in the 25 th year (this is 24 years after the first one, so we take y = 24) is:

f(24) = 800*(0.75)^(24) = 0.80

Around this point, we will have no more sunfish in the lake.

Answer: 120+20x=280

Step-by-step explanation:

280-120=160

160/20=8

The correct answer is the last one, 120+20x=280

Answer:

-6k-5

Step-by-step explanation:

Distribute parenthesis aka multiple negative and switch the equation sign

Answer:

−6k−5

Step-by-step explanation:

Answer:

[tex]\frac{\sqrt{5} }{5}[/tex]

Step-by-step explanation:

[tex]\frac{1}{\sqrt{5} }[/tex]  multiply each side by [tex]\sqrt{5}[/tex] which comes out to [tex]\frac{\sqrt{5} }{5}[/tex]

Answer:

11/5.5= $2 per pound of gravel

Hope this helped :)

Answer:

Step-by-step explanation:

d

Answer:

D, or 432 Inches Squared

Step-by-step explanation:

First we have to find each side

Front = 6 x 12, 72

Side = 6 x 8, 48

Bottom/Top = 12 x 8, 96

Next we multiply each side by 2, since there is 2 sides for each respective surface.

72 x 2 = 144

48 x 2 = 96

96 x 2 = 192

Lastly, we add them all together, since we are finding surface area!

144 + 96 + 192 = 432

Answer:

I cant draw the image but

Step-by-step explanation:

point E would have to be at (-2, -2)

Answer:

See attached

Step-by-step explanation:

Each point of the quadrilateral changes coordinates as:

Image T'E'A'M' is added to original drawing

Answer:

Option 2 i.e. 9√2 is the correct option.

Step-by-step explanation:

Given the expression

[tex](\sqrt{200}\:+\:\sqrt{128})[/tex]

The half of [tex](\sqrt{200}\:+\:\sqrt{128})[/tex] can be determined by dividing the expression in half.

Therefore, we need to solve the expression such as

[tex]\frac{\left(\sqrt{200}\:+\:\sqrt{128}\:\right)}{2}[/tex]

as

[tex]\sqrt{200}=\sqrt{100\times 2}=\sqrt{100^2\times \:2}=10\sqrt{2}[/tex]

[tex]\sqrt{128}=\sqrt{64\times 2}=\sqrt{8^2\times \:2}=8\sqrt{2}[/tex]

so the expression becomes

[tex]\frac{\left(\sqrt{200}\:+\:\sqrt{128}\:\right)}{2}=\frac{10\sqrt{2}+8\sqrt{2}}{2}[/tex]

Add similar elements:  [tex]10\sqrt{2}+8\sqrt{2}=18\sqrt{2}[/tex]

                     [tex]=\frac{18\sqrt{2}}{2}[/tex]

Divide the numbers: 18/2 = 9

                      [tex]=9\sqrt{2}[/tex]

Therefore, we conclude that:

[tex]\frac{\left(\sqrt{200}\:+\:\sqrt{128}\:\right)}{2}=9\sqrt{2}[/tex]

Hence, option 2 i.e. 9√2 is the correct option.

Answer:

12/15 acres of land

Step-by-step explanation:

Total measure of land = 2 2/5acres

Total brothers = 3

Amount of acres each brothers will receive = Total measure of land/Total brother

Amount of acres each brothers will receive = (2 2/5)/3

Amount of acres each brothers will receive = 2 2/5 ÷ 3

Amount of acres each brothers will receive = 12/5 ÷ 3

Amount of acres each brothers will receive = 12/5 * 1/3

Amount of acres each brothers will receive = 12/15

Hence each brother will receive 12/15 acres of land