All categories

3 years ago

WILL GIVE BRAINLIEST! DO NOT COPY ANSWERS OFF INTERNET

Mathematics

2 answers:

Alla [95]3 years ago

5 0

Answer:

ITS EITHER B OR C but im 75 percent sure its b

Step-by-step explanation:

Anarel [89]3 years ago

3 0

Answer:

Option A

Step-by-step explanation:

angles ABD and DBC are complementary given

angle ABD=50 degrees given

angles ABD and DBC = 90 degrees def. of complementary

angle DBC = 40 degrees algebra (90-50=40)

angles EBF and ABD are vertical angles vertical angles postulate

angle EBF is congruent to angle ABD def. of vertical angles

angle EBF = 50 degrees def. of congruence

angles EBF and ABF are a linear pair def. of linear pair

angles EBF and ABF are supplementary def. of linear pair

angles EBF and ABF = 180 def. of supplementary

angle ABF = 130 degrees algebra (180-50=130)

angles ABF and EBD are vertical angles vertical angles postulate

angles ABF and EBD are congruent def. of vertical angles

angle EBD = 130 degrees def. of congruence

angles CBE + DBC = EBD diagram

angles CBE + DBC = 130 degrees transitive property of congruence

angle ABD = 90 algebra (130-40=90)

B is needed in the process, but the main statement that actually does the justification is A, so option A

You might be interested in

What is negation of any number

mamaluj [8]

Answer:

More informally: The two's complement of an integer is exactly the same thing as its negation. ... It means "to find the negation of a number (i.e., its two's complement) you flip every bit then add 1"

7 0

3 years ago

Please help thanks thanks thanks ty

Archy [21]

Answer:

104 degrees

Step-by-step explanation:

First let's start by finding Angle DGC. Since Angle FGD and DGC are a linear pair, Angle DGC = 180-90 = 90 degrees.

Next we need to find GDC

Angles in a triangle add up to 180 degrees therefore...

Angle GDC + DCG + DGC = 180

Plug in the values we found into the equation

Angle GDC + 37 + 90 = 180

Angle GDC + 127 = 180

Angle GDC = 53

Therefore Angle ADC = 53 + 51 = 104 degrees

Since ABCD is a parallelogram, then opposite angles are equal therefore...

Angle B = 104 degrees

3 0

2 years ago

1. Which ordered pairs are solutions to the inequality –3x + y ≥ 7?

Murrr4er [49]

Q1. The answers are (–1, 8), (0, 7), (3, 18)

–3x + y ≥ 7
Let's go through all choices:

(–2, –3)
(-3) * (-2) + (-3) ≥ 7
6 - 3 ≥ 7
3 ≥ 7 INCORRECT

(–1, 8)
(-3) * (-1) + 8 ≥ 7
3 + 8 ≥ 7
11 ≥ 7 CORRECT

(0, 7)
(-3) * 0 + 7 ≥ 7
0 + 7 ≥ 7
7 ≥ 7 CORRECT

(1, 9)
(-3) * 1 + 9 ≥ 7
-3 + 9 ≥ 7
6 ≥ 7 INCORRECT

(3, 18)
(-3) * 3 + 18 ≥ 7
-9 + 18 ≥ 7
9 ≥ 7 CORRECT

Q2. The answers are:
5x + 12y ≤ 80
x ≥ 4
y ≥ 0

x - small boxes
y - large boxes

He has x small boxes that weigh 5 lb each and y large boxes that weigh 12 lb each on a shelf that holds up to 80 lb:
5x + 12y ≤ 80

Jude needs at least 4 small boxes on the shelf: x ≥ 4

Let's check if y can be 0:
5x + 12y ≤ 80
5x + 12 * 0 ≤ 80
5x + 0 ≤ 80
5x ≤ 80
x ≤ 80 / 5
x ≤ 16

x ≥ 4 can include x ≤ 16

So, y can be 0: y ≥ 0

8 0

2 years ago

Substitution method- y=-x+4 and y=3x

kumpel [21]

Substitue y=3x into the other equation to get 3x=-x+4. Solve this to get 4x=4 therefore x=1.
knowing this, y=3

5 0

3 years ago

TotCo is developing a new deluxe baby bassinet. If the length of a newborn baby is normally distributed with a mean of 50 cm and

slavikrds [6]

Answer:

91.63 cm is the interior length of the bassinet to ensure that 99 percent of newborn babies will fit, with a safety margin of 15 cm on each end of the bassinet.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 50 cm

Standard Deviation, σ = 5 cm

We are given that the distribution of length of a newborn baby is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$