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3 years ago

Please helpppppppppppppppppp

Mathematics

1 answer:

murzikaleks [220]3 years ago

6 0

Answer:

B-value: -1

Step-by-step explanation:

In a quadratic equation, the b-value is always next to (and multiplied by) the x-value. In other words, it is known to be the middle number. In this example there is a minus adjacent to the x such that you would consider <em>the b-value to be -1</em> .

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Write the following expression in exponential form: In x = 47

lana [24]

E^47=x is the answer.

5 0

3 years ago

35 - 5² + (2 * 5)² x 3

polet [3.4K]

Answer:

310

Step-by-step explanation:

35 - 5² + (2 * 5)² * 3

Solve inside the parenthesis.

35 - 5² + 10² * 3

Solve the exponents.

35 - 25 + 100 * 3

Solve the multiplication.

35 - 25 + 300

Solve the subtraction.

10 + 300

Add.

310

3 0

3 years ago

Is there enough information to prove that the triangles are congruent?

Novosadov [1.4K]

Answer:

Step-by-step explanation:

From the figure attached,

In the given right triangles ΔADB and ΔCDB,

Statements Reasons

1). ∠BAD ≅ ∠BCD 1). Given

2). BD ≅ BD 2). Reflexive property

3). ΔADB ≅ ΔCDB 3). By LA theorem of congruence of right triangles

Therefore, there is sufficient information to prove the ΔADB and ΔCDB congruent.

Leg-angle theorem (L-A) will be used to prove the right triangles congruent.

3 0

3 years ago

Read 2 more answers

Manav is painting a rectangular room and the dimensions of this room are given by x,y and z feet. Manav takes 8 hours to paint a

zhenek [66]

Answer:

B) 36 cubic feet

Step-by-step explanation:

Dimensions of the room are x, y and z feet. It is given that x = 6 feet.

Manav took 8 hours to paint the wall with dimensions x and z.

This means, in 8 hours Manav painted area = xz = 6z

In 1 hour Manav painted area = $\frac{6z}{8}$

Manav took 4 hours to paint the wall with dimensions y and z.

This means, in 4 hours Manav painted area = yz

In 1 hour Manav painted area = $\frac{yz}{4}$

Manav took 12 hours to paint the ceiling with dimensions x and y.

This means, in 12 hours Manav painted area = xy = 6y

In 1 hour Manav painted the area = $\frac{6y}{12}=\frac{y}{2}$

Since, Manav works at constant rate, this means the worked done in 1 hour in all 3 cases would be the same. So we can write:

$\frac{6z}{8}=\frac{yz}{4}=\frac{y}{2}$

Using the first two equations, we get:

$\frac{6z}{8}=\frac{yz}{4}\\\\ \frac{6}{8}=\frac{y}{4}\\\\ y=\frac{6}{8} \times 4\\\\ y = 3$

Using the last two equations, we get:

$\frac{yz}{4}=\frac{y}{2}\\\\ \frac{z}{4}=\frac{1}{2}\\\\z=2$

So, we have the follwoing dimensions of the room:

x = 6 feet

y = 3 feet

z = 2 feet

So the volume of the room is = 6 x 3 x 2 = 36 cubic feet

7 0

3 years ago

The distance between Pittsburgh, Pennsylvania, and St. Louis, Missouri, is 17 miles less than 5 times the distance between Pitts

pentagon [3]

We are given statement : The distance between Pittsburgh, Pennsylvania, and St. Louis, Missouri, is 17 miles less than 5 times the distance between Pittsburgh and Cleveland, Ohio.

The distance between Pittsburgh and Cleveland = d.

We need to write an expression for distance between Pittsburgh and St. Louis.

<h3>And it's "17 miles less than 5 times the d".</h3><h3>5 times of d is = 5d.</h3><h3>17 miles less than 5d = 5d -17.</h3><h3>Therefore, 5d -17 expression can you use to represent the distance between Pittsburgh and St. Louis.</h3>

7 0

3 years ago