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3 years ago

Please help me please!!!

Mathematics

2 answers:

Rama09 [41]3 years ago

7 0

Answer:

Step-by-step explanation:

AfilCa [17]3 years ago

4 0

work and solve this:

(2x-10)+(65-x)=180

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-3(4v+1)-3(2v+3) how do you simplify

Shtirlitz [24]

First you have to multiply the numbers out of the paranthesis, with the numbers in it:
$-3(4v+1)-3(2v+3)\\ -3\cdot 4v-3\cdot 1-3\cdot 2v-3\cdot 3$
then solve :
$-12v-3-6v-9\\ -18v-12$

4 0

3 years ago

Read 2 more answers

Which conjecture is possible to prove is congruent? A. All quadrilaterals with 4 equal angles B. All triangles with 3 equal angl

igor_vitrenko [27]

Answer: D. All triangles with 3 equal sides

Step-by-step explanation:

Remember, congruence means that the sides are equal and also the corresponding angles:

A) Quadrilaterals with 4 equal angles.

Here we can have, for example, a lot of different rectangles and squares, because all of them have only 45° angles, but a square is not congruent with a rectangle, so this option is not correct.

B) Triangles with 3 equal angles.

Think in the triangles, the 3 angles are 60°,

But we can craft this angle with a lot of different side lengths, so this is not the correct option, so not all the triangles with equal angles are congruent, then this option is incorrect.

C) Quadrilaterals with 4 equal sides: Here we can have a square, or a rhombus, or a parallelogram, so this option is also incorrect.

D) Triangles with 3 equal sides:

Now, we have the set of all the triangles where the length of the 3 sides is the same.

Now, if you have 3 knowed lenghts (the ones shared by the set of triangles) you can only create one triangle with them, this is known as the SSS criterion of congruence for triangles. This is the correct option.

7 0

3 years ago

This is a slope intercept form problem...can anybody please help me thank you ♥️

spayn [35]

Hi There!

-----------------------------------------

We Know:

$35 per person.

Guides Fee: 10 * 35 = 350

425 - 350 = $75 (guide fee)

-----------------------------------------

Part A:

The problem states to put c as cost and p as number of people:

c = 35p + 75

b = $75 (guide fee)

If you don't need the one above, this is just in slope intercept form.

y = 35x + 75

b = $75 (guide fee)

Answer: c = 35p + 75 or y = 35x + 75

-----------------------------------------

Part B:

How much would it cost for 15 people?

Lets use: c = 35p + b

Substitute p for 15 people and b as $75 for the guide fee: c = 35(15) + 75

Simplify: c = $600

Answer: The total cost for 15 people is $600.

-----------------------------------------

Hope This Helps :)

8 0

3 years ago

2 Sarah's recipe for energy bars calls for 5 cup of dried fruit. How many cups of dried fruit will she need to make la batches o

den301095 [7]

Answer:

5 cups of dried fruit?

Step-by-step explanation:

unless something is missing it's 5 cups

7 0

3 years ago

Someone please help me with this question i really need help

Nina [5.8K]

Answer:

b = 7.76

Step-by-step explanation:

ABC is a triangle. In a triangle, we have the formula as following:

+) Cosine ∠An angle = $\frac{Adjacent side a^{2} + Adjacent side b^{2} - Opposite side^{2} }{ 2 * Adejacent side a* Adejacent side b}$

As we can see in the figure, Angle B has:

+) Adjacent side a is BA = 10

+) Adjacent side b is BC = 12

+) Opposite side is AC = b

The measure of Angle B is 40°.

Replace these into the formula, we have:

+) Cosine ∠B = $\frac{AB^{2}+BC^{2}-AC^{2} }{2ABBC}$

⇔ Cosine 40° = $\frac{10^{2}+12^{2} -b^{2} }{2*10*12}$

⇔ 0.766 = $\frac{244 - b^{2} }{240}$

⇔ 0.766 x 240 = 244- b^2

⇔ 183.84 = 244 -b^2

⇔ b^2 = 244 - 183.84 = 60.16

⇔ b = $\sqrt{60.16}$ = 7.76

7 0

3 years ago