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3 years ago

Find the value of x. A. 99 B. 9 C. 90 D. 11 ILL GIVE BRAINLIEST

Mathematics

2 answers:

Harlamova29_29 [7]3 years ago

7 0

Answer:

B.9

Step-by-step explanation:

The way to solve this is by noticing that these angles are complementary(they add up to 90 degrees). So you add the equations together and equal them to 90. 5x-9+6x=90.Then you solve to find that x=9.

spin [16.1K]3 years ago

3 0

Answer:

B) 9

Step-by-step explanation:

Because there's a square between the 2 angles, that means these angles are complementary (angles that add up to 90°). So:

5x - 9 + 6x = 90

11x - 9 = 90

11x = 90 + 9

11x = 99

x = 9

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Find an equation of combined variation where a varies directly as b and inversely as c. One set of values is a = 4, b = 12, and

Ber [7]

Answer:

Combined equation is $a = \frac{kb}{c}$

Step-by-step explanation:

a varies directly as b and inversely as c.

This can be written as

a = $k \times b$

a = kb

where k is the proportionality constant

$a = \frac{kb}{c}$ -------------------------------------(1)

Now lets find the k value bu substituting the given a, b,c values

$4 = \frac{k (12)}{9}$

$9 \times 4 = 12k$

36 = 12 k

$k = \frac{36}{12}$

k = 3

Thus the eq(1) becomes

$a = \frac{3b}{c}$

Let us now find the value of a when b=7 and c = 3

$a = \frac{3(7)}{3}$

$a =\frac{21}{7}$

a = 7

4 0

4 years ago

A bread recipe calls for 13 cup of butter. You want to make 12 of a batch.

Lostsunrise [7]

Answer:

156 cups of butter will be required.

Step-by-step explanation:

A bread recipe calls for the amount of butter = 13 cups

Now we have to prepare the 12 bread recipes.

Amount of butter required for 12 recipes = 13 times 12

= 13 × 12

= 156 cups

Therefore, 156 cups of butter will be required to prepare the 12 of a batch.

8 0

3 years ago

Read 2 more answers

Each week as part of her workout, Monica walks 0.5 mile, runs 1.6 miles, and then walks 0.75 mile.

Charra [1.4K]

Answer:

She will walk and run 148.2 miles in a year

Step-by-step explanation:

She walks: 0.75+0.5=1.25 miles each week

And: 1.25 *52=65 miles a year

She runs : 1.6 miles a week

And: 1.6*52 =83.2 miles a year

Total miles : 83.2+65=148.2 miles

6 0

3 years ago

The time to failure (in hours) for a laser in a cytometry machine is modeled by an exponential distribution with . Round the ans

wariber [46]

Answer:

a)e^-(λ20891)

b)1-e^-(λ30598)

c)1-e^-(λ30598)-e^-(λ20891)

Step-by-step explanation:

The probability density function (pdf) of an exponential distribution is

f(x,λ)=λe^-(λx) for x>0, and 0 for x<0

The cumulative distribution function is given by

F(x,λ)=1-e^-(λx) for x>0, and 0 for x<0

P(X≥20891)=1-P(X≤20891)=1-F(20891,λ)=e^-(λ20891)

P(X≤30598)=F(30598,λ)=1-e^-(λ30598)

P(20891≤X≤30598)=F(30598,λ)-(20891,λ)=1-e^-(λ30598)-e^-(λ20891)

5 0

3 years ago

28 is what percent of 51

AVprozaik [17]

I got 54.90196 for that problem

3 0

3 years ago