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3 years ago

HELP ME SOLVE THIS ASAP

Mathematics

1 answer:

vampirchik [111]3 years ago

3 0

Answer:

∠B = 60°

a = 4.0 units

b = 6.9 units

Step-by-step explanation:

The triangle is right angled. The sum of all angles of a triangle is equal to 180 degrees.

The 3 angles are 90, 30 , ∠B .

Thus, B = 180 - 120 = 60 degrees

by trigonometry,

sin(30) = $\frac{a}{8}$ = 0.5

a = (8)(0.5) = 4 units

Also,

cos(30) = $\frac{b}{8}$ = 0.866

b = (8)(0.866)= 6.928

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a family had dinner in a restaurant and paid rs 900 for food they also had to pay 1p percent sale tax and 15 percent for the tri

jarptica [38.1K]

Answer:

Total amount pay for dinner = Rs 1,014

Step-by-step explanation:

Given:

Amount pay for food = Rs 900

Percentage of sales tax = 1%

Percentage of trip payment = 15%

Find:

Total amount pay for dinner

Computation:

Amount pay for sales tax = Amount pay for food x Percentage of sales tax

Amount pay for sales tax = 900 x 1%

Amount pay for sales tax = 900 x 0.01

Amount pay for sales tax = Rs 9

Amount pay for trip = Amount pay for food x Percentage of trip payment

Amount pay for trip = 900 x 15%

Amount pay for trip = 900 x 0.15

Amount pay for trip = Rs 105

Total amount pay for dinner = Amount pay for food + Amount pay for sales tax + Amount pay for trip

Total amount pay for dinner = 900 + 105 + 9

Total amount pay for dinner = Rs 1,014

3 0

2 years ago

Help me please please

artcher [175]

Answer:

L = 34 - 0.5d

21 feet

Step-by-step explanation:

The initial water level ; 34

the amount is rises per day; 0.5

"L" is the water level,

"d" is the days passed.

In order to find the water level, one will have to multiply the amount the water rises each day, by the days passed. Then one will have to subtract that from the initial water level, hence the equation formed is the following;

L = 34 - 0.5d

Substitute in 26 for "d", to solve for the water level after 26 days.

L = 34 - 0.5(26)

L = 34 - 13

L = 21

4 0

3 years ago

Ray BD bisects 2ABC. Use the diagram and the given angle measure to

Alenkinab [10]

Assuming you mean angle ABC and not 2ABC?
Since ray BD bisects angle ABC we can set the two angle measures given equal to each other.
2x+7=4x-41
Solve for x=24
Plug in the x to find angle ABD 2(24)+7=55
therefore angle ABD is 55 and angle DBC is 55 so angle ABC is 110

5 0

3 years ago

The depreciating value of a semi-truck can be modeled by y = Ao(0.84)x, where y is the remaining value of the semi, x is the tim

NemiM [27]

The value of the truck initially, Ao is
83000

1-0.16=0.84
1-0.26=0.74

After one year the value
Y=83,000×(0.84)=69,720
Y=83,000×(0.74)=61,420
When you compare the results you will see that the graph would fall at a faster rate to the right because the depreciation rate of 26% is higher than the depreciation rate of 16%

Hope it helps

8 0

3 years ago

Which equation shows the point-slope form of the line that passes through (3, 2) and has a slope of 1/3

Vikentia [17]

Answer:

y-2=1/3(x-3)

Step-by-step explanation:

Point slope formula: y-y1=m(x-x1)

m is slope.

y-2=1/3(x-3)

Hope this helps!

If not, I am sorry.

3 0

2 years ago