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olga55 [171]
2 years ago
9

I need help it's due by 7

Mathematics
2 answers:
devlian [24]2 years ago
3 0

Answer:

Step-by-step explanation:

w=204.8

QveST [7]2 years ago
3 0

Answer:

204.8

Step-by-step explanation:

8x25.6=204.8

DOuble Check:

204.8 divided by 25.6=8

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I came up the answer as 57. I will attach my note, can you check?
ololo11 [35]

BC=19

Explanation

Step 1

ABE

triangle ABE is rigth triangle, then let

\begin{gathered} Angle=60 \\ adjacentside=BE \\ opposit\text{ side(the one in front of the angle)= AB=}\frac{19\sqrt[]{6}}{4} \end{gathered}

so, we need a function that relates, angle, adjancent side and opposite side

\tan \theta=\frac{opposite\text{ side}}{\text{adjacent side}}

replace

\begin{gathered} \tan \theta=\frac{opposite\text{ side}}{\text{adjacent side}} \\ \tan 60=\frac{AB}{\text{BE}} \\ \text{cross multiply} \\ \text{BE}\cdot\tan \text{ 60=AB} \\ \text{divide both sides by tan 60} \\ \frac{\text{BE}\cdot\tan\text{ 60}}{\tan\text{ 60}}=\frac{\text{AB}}{\tan\text{ 60}} \\ BE=\frac{\text{AB}}{\tan\text{ 60}} \\ \text{if AB=}\frac{19\sqrt[]{6}}{4} \\ BE=\frac{\frac{19\sqrt[]{6}}{4}}{\sqrt[]{3}} \\ BE=\frac{19\sqrt[]{6}}{4\sqrt[]{3}} \end{gathered}

Step 2

BED

again, we have a rigth triangle,then let

\begin{gathered} \text{Hypotenuse}=BD \\ \text{adjacent side= BE=6.71} \\ \text{angle}=\text{ 45} \end{gathered}

so, we need a function that relates; angle, hypotenuse and adjacent side

\cos \theta=\frac{adjacent\text{ side}}{\text{hypotenuse}}

replace.

\begin{gathered} \cos \theta=\frac{adjacent\text{ side}}{\text{hypotenuse}} \\ \cos 45=\frac{6.71}{\text{BD}} \\ BD=\frac{6.71}{\cos \text{ 45}} \\ BD=\frac{\frac{19\sqrt[]{6}}{4\sqrt[]{3}}}{\frac{\sqrt[]{2}}{2}} \\ BD=\frac{38\sqrt[]{6}}{4\sqrt[]{6}} \\ BD=\frac{38}{4} \end{gathered}

Step 3

finally BDE

let

angle=30

opposite side= BD

use sin function

\begin{gathered} \sin \theta=\frac{opposite\text{ side}}{\text{hypotenuse}} \\ \text{replace} \\ \sin \text{ 30=}\frac{BD}{BC} \\ BC\cdot\sin 30=BD \\ BC=\frac{BD}{\sin \text{ 30}} \\ BC=\frac{\frac{38}{4}}{\frac{1}{2}} \\ BC=\frac{76}{4}=19 \\ BC=19 \end{gathered}

so, the answer is 19

I hop

4 0
1 year ago
Find the solution of this system of equations. separate the x- and y- values with a comma.
jonny [76]
X - 2y = -29
x - y = -11

first solve for x in the first equation;
x = 2y - 29

now substitute it into the second equation;
x - y = -11

2y - 29 - y = -11
y - 29 = -11

solve for y;
y - 29 = -11
y = -11 + 29
y = 18

solve for x by substituting what y equals;
x = 2y - 29
x = 2(18) - 29
x = 7

so your answer is, (7, 18)

hope this helped!! blessings x
4 0
3 years ago
Read 2 more answers
The table shows the amount of sugar needed to make lemonade. Are the quantities proportional? Explain which method you used and
melomori [17]

Answer:

Yes, the quantities are proportional.

Step-by-step explanation:

To determine whether they were proportional or not, I compared the ratio of grams of sugar to servings in each pair of data points. 4/2, 6/3, 8/4, and 10/5 were the four points. All of them can be simplified to 2/1, which tells us that each serving of sugar is 2 grams, no matter how many servings are counted. This means that the amount of sugar grows in direct proportion to the number of servings.

8 0
2 years ago
Sports American football fields measure 100 yards long between the end zones, and are 53 1_3yards wide. Is the length of the dia
Ann [662]

Answer:

113 \frac{1}{3} Yards

Step-by-step explanation:

solving using  Pythagorean Theorem

a^2+b^2=c^2

100^2+53.33^2 = c^2

10,000+2844.0889=c^2

12844.1=c^2 square root

= 113 \frac{1}{3}

Base on the explanation above we can tell that the length of the diagonal across this field is less than 120 yards.

8 0
2 years ago
Where is the removable discontinuity of f(x)=x+5/x^2+3x-10 located?
mario62 [17]
We are looking to find the point where the curve discontinued

Step 1: Factorise both numerator and denominator (if possible)
\frac{x+5}{ x^{2} +3x-10}= \frac{(x+5)}{(x+5)(x-2)}

Step 2: Recognise the common factor, which is (x+5)

Step 3: Equate the common factor to 0
x+5=0
x=-5

Answer: -5
3 0
3 years ago
Read 2 more answers
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