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3 years ago

Use the graph to answer the questions

Mathematics

2 answers:

Crank3 years ago

8 0

Julio began at a 4 mile elevation. Kathy began at 0 elevation. Kathy made it to 8 miles first. Kathy experienced a greater elevation change. Hope that helps :)

blsea [12.9K]3 years ago

8 0

Answer:

Julio began at a 4 mile elevation. Kathy began at 0 elevation. Kathy made it to 8 miles first. Kathy experienced a greater elevation change

Step-by-step explanation:

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SOLVE EQUATION BY TAKING SQUARE ROOTS.<br> -100+81a^2=0

IceJOKER [234]

Answer:

a = ±10/9

Step-by-step explanation:

$-100+81a^2=0\\81a^2=100\\a^2=\frac{100}{81}\\\sqrt{a^2}=\sqrt{\frac{100}{81} }\\a=10/9\\a=-10/9$

7 0

2 years ago

Read 2 more answers

What is the first step in simplifying

seraphim [82]

Distribute the negative b and negative one to he terms in the parentheses
In an expression, if there area brackets, you always have to expand THEN solve it

7 0

2 years ago

CAN SOMEONE PLEASE HELP ME WITH THIS QUESTION

Murljashka [212]

Answer:

The value of DC is 66.34.

Step-by-step explanation:

The triangles ABC and DCA are right angled triangles.

The straight line AC is a bisector for angles C and A.

The measure of ∠C is 30°.

Then the measure of angles BCA and ACD will be 15° each.

The measure of angle DAB is 150°.

Then the measure of angles DAC and BAC will be 75° each.

Now consider the right angled triangle ABC.

The measure of side AC is:

$AC^{2}=AB^{2}+BC^{2}\\AC=\sqrt{AB^{2}+BC^{2}}\\=\sqrt{4^{2}+(10\sqrt{3})^{2}}\\=\sqrt{316}$

Consider the right angled triangle DCA.

The angle DAC measure 75°.

Using the trigonometric identities compute the value of Perpendicular DC as follows:

$tan\ 75^{o}=\frac{DC}{\sqrt{316}}\\\\DC=3.732\times\sqrt{316}\\\\DC=66.34$

Thus, the value of DC is 66.34.

7 0

2 years ago

Evaluate 5x – 2y + (7x – y) for x = 7 and y = –2

Lynna [10]

Answer:

Step-by-step explanation:

5x – 2y + (7x – y)

Combine like terms

12x -3y

Let x = 7 and y = -2

12(7) -3(-2)

84 +6

6 0

2 years ago

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James and Brandon both bought a drink from the store. James drank 3/4 of his drink. How many eights did brandon drink?

maksim [4K]

Answer:

6/8

Step-by-step explanation:

3/4.

3×2=6.

4×2=8.

6/8.

5 0

2 years ago