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3 years ago

FIND X & Y... URGENT... PLEEEEAAAASSSEEEE HELP ME SOLVE!!!!!!!

Mathematics

1 answer:

wariber [46]3 years ago

5 0

Answer:

5/4 =x

7/4 =y

Step-by-step explanation:

We can use proportions to solve. Put the small triangle side over the big triangle side

5 8

---------- = -------------

5+x 10

Using cross products

5*10 = 8(5+x)

Distribute

50 = 40+8x

Subtract 40 from each side

50-40 =40-40+8x

10 = 8x

Divide by 8

10/8 = 8x/8

5/4 =x

7 8

---------- = -------------

7+y 10

Using cross products

7*10 = 8(7+y)

Distribute

70 = 56+8y

Subtract 56 from each side

70-56 =56-56+8y

14 = 8y

Divide by 8

14/8 = 8y/8

7/4 =y

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16 3/4 hours in two days plan to work 12 3/4 hour the next two days. How many hours will u total on your time sheet for these 4

sergiy2304 [10]

let's firstly convert the mixed fractions to improper fractions and then add up all four days.

$\bf \stackrel{mixed}{16\frac{3}{4}}\implies \cfrac{16\cdot 4+3}{4}\implies \stackrel{improper}{\cfrac{67}{4}}~\hfill \stackrel{mixed}{12\frac{3}{4}}\implies \cfrac{12\cdot 4+3}{4}\implies \cfrac{47}{4} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{all 4 days summed up}}{\cfrac{67}{4}+\cfrac{47}{4}}\implies \cfrac{67+47}{4}\implies \cfrac{114}{4}\implies \cfrac{57}{2}\implies 28\frac{1}{2}$

7 0

3 years ago

Write the equation of a line in slope/intercept form given m=0 , and it goes through the point (-2,5).

Lera25 [3.4K]

Answer:

y=5

Step-by-step explanation:

Use the given slope and point to substitute into the point-slope formula then you can solve for slope/intercept form

Tip: If the slope is 0 the equation is going to be y= the y of your original point (-2,5)

8 0

3 years ago

Anon25 [30]

Answer:

2.17

Answer and Explanation:

The critical value of z for 97% confidence interval is 2.17, which is obtained by using a z score table, that is: {eq}P(-2.17 < Z <...

5 0

3 years ago

A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.7 years, and standard deviation of

lesya692 [45]

Answer: 9.2 years

Step-by-step explanation:

Given the following :

Mean(m) = 11.7 years

Standard deviation (s) = 1.2 years

Recall the z-score formula :

Z = (x - m) / s

We can find the z-score by locating the value of 2% in the negative z-table, then solve for x.

2% = 0.02

0.02 falls most closely to 0.02018whuch is under - 2.05.

Using the z-score value in the formula above :

-2.05 = (x - 11.7) / 1.2

Cross multiply

(-2.05 × 1.2) = x - 11.7

-2.46 = x - 11.7

x = - 2.46 + 11.7

x = 9.24 years

6 0

4 years ago

Please help me with this question

BartSMP [9]

Answer:

$3x-28=2x+25\\x=53$

Step-by-step explanation:

Parallel lines cut by a transversal are two lines which do not cross intersected by a third line. Because lines such as m and n are parallel, we have angles which are equal to each other.

Corresponding Angles - angles located in the same position in each intersection. Can be shown by translating or sliding the angle down/up.
Alternate Interior Angles - angles located inside the parallel lines across the transversal. Can be shown by reflecting and translating or rotation.
Alternate Exterior Angles - angles located outside the parallel lines across the transversal. Can be shown by reflecting and translating or rotation.

Vertical angles - angles across a vertex from one another. Can be shown by reflection.

The angles shown here are located outside the parallel lines and across the transversal from each other. Therefore we have Alternate Exteroir angles and can set them equal to each other to solve for x.

$3x-28=2x+25\\3x-2x-28=2x-2x+25\\x-28=25\\x-28+28=25+28\\x=53$

We check our work and should get equal angles:

$3(53)-28=2(53)+25\\159-28=106+25\\131=131$

4 0

4 years ago