All categories

3 years ago

PLEASE HELP ASAP!!!!!!!!!!!

Mathematics

2 answers:

marusya05 [52]3 years ago

4 0

Answer:(1) The correct option is b. (2) The correct option is c.

Explanation:

(1)

It is given that the △ABD≅△FEC.

So by (CPCTC) corresponding parts of congruent triangles are congruent.

$\angle CFE=\angle DAB$

It is given that the angle DAB is 63 degree.

$\angle CFE=63^{\circ}$

Therefore, the correct option is b.

(2)

It is given that the △ABD≅△FEC.

So by (CPCTC) corresponding parts of congruent triangles are congruent.

$BD=EC$

$BD=CD+DE$

$BD=8+10$

$BD=18$

Therefore, the correct option is c.

lozanna [386]3 years ago

3 0

Answer:

1). Option B.

2). Option C.

Step-by-step explanation:

1). In the figure attached, ΔABD ≅ ΔCFE

Then corresponding parts of the congruent triangles will be equal.

Therefore, m∠CFE ≅ m∠BAD ≅ 63°

Option B will be the answer.

2. We have to find the measure of BD.

Since ΔABD ≅ ΔCFE

So side BD ≅ side EC ≅ (CD + DE)

m(side BD) = 8 + 10 = 18 units

Option C is the answer.

You might be interested in

Find the length of a rectangle with a perimeter of 76 inches and width of 16 inches.

levacccp [35]

Answer:

22 inches

Step-by-step explanation:

Width (16) x 2 = 32

72 (perimeter) - 32 (width x 2) = 44 inches

44 divided by 2 is 22, which is the length.

3 0

2 years ago

Read 2 more answers

Lily and Sabrina often make some extra pocket money by painting garden sheds. Lily can paint a shed in 5 hours working alone, wh

prisoha [69]

Lily and sabring make extra pocket money by paint gradden shed lily can paint

3 0

3 years ago

The owners of an eyeglass store claim that they fill customers' orders, on average, in 60 minutes with a standard deviation of 1

melomori [17]

By applying z-score formula we got that if a reporter determines a mean order time of 63 minutes then value o Z is 1.19

<h3>What is standard deviation?</h3>

Standard deviation is a number used to tell how measurements for a group are spread out from the average (mean), or expected value

Here given that

The owners of an eyeglass store claim that they fill customers' orders, on average, in 60 minutes with a standard deviation of 15. 9 minutes. Based on a random sample of 40 orders, a reporter determines a mean order time of 63 minutes

mean=μ=60

standard deviation=σ=15.9

number of sample=n=40

$\bar{x}=63 \\$

Now we can calculate z by z-score formula as

$z=\frac{\bar{x}-\mu}{\frac{\sigma}{\sqrt{n}}} \\\\&=\frac{63-60}{\frac{15 \cdot 9}{40}} \\ \\=\frac{3}{2.5140} \\ \\=1.19\end{aligned}$

By applying z-score formula we got that if a reporter determines a mean order time of 63 minutes then value o Z is 1.19

To learn more about standard deviation visit :brainly.com/question/12402189

5 0

2 years ago

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ?x - 49

shutvik [7]

We are asked to find unknown or the missing number to complete the polynomial given in the problem which is x² + ?x -49. First, let us equate the number to be equal to zero such as it would become x² + ?x - 49 = 0. Next, we need to find the factors such that it would produce a difference of squares and these two factors are a = +7 and b = -7. Hence, the complete solution is shown below:
(x + 7) (x-7) = 0
perform distribution and multiplication of terms such as shown below:
x² + 7x - 7x - 49 = 0
Combine the same term such as we can either add or subtract +7x to -7x and the result will be equal to 0x.
x² + 0x - 49 = 0

Therefore, the missing number is 0. The answer is 0 which will result to x² +0x - 49.

4 0

3 years ago

Read 2 more answers

Please answer show all your work or tell me the steps

lutik1710 [3]

Answer:

2) $25.01 3) $25.98

Step-by-step explanation:

2) 23.6 x 7% = 23.6 x .07 (move the decimal 2 places to the right) 23.6 x .07 = 1.652 but its money so round to $1.65 + 23.36 = $25.01

3) 24 x 8.25 = 24 x .0825 (again to the right twice) 24 x .0825 = 1.98+24 = 25.98

5 0

3 years ago

Read 2 more answers