All categories

3 years ago

Ed is 7 years older than Ted. Ed’s age is also times Ted’s age. How old are Ed and Ted?

Mathematics

1 answer:

valentina_108 [34]3 years ago

4 0

Answer:

Hi there!

Your answer is:

B. Ted is 14 and Ed is 21

Step-by-step explanation:

Ed= T+7

Ed = 3/2 T

T means Teds age!

T+7 = 3/2T

Subtract T

7= 1/2T

Multiply by 2 to create 1T

14= Teds age

Ed= 14+7

Ed= 21

Hope this helps!

You might be interested in

What is the mass, in grams, of 28.52 ml of acetone??

bagirrra123 [75]

28.52 grams of acetone

4 0

2 years ago

A company produces packets of soap powder labeled "Giant Size 32 Ounces." The actual weight of soap powder in such a box has a N

Stolb23 [73]

Answer:

0.0764

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 33, \sigma = 0.7$

What proportion of boxes is underweight (i.e., weigh less than 32 oz)?

This is the pvalue of Z when X = 32. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{32 - 33}{0.7}$

$Z = -1.43$

$Z = -1.43$ has a pvalue of 0.0764, which is the correct answr

6 0

3 years ago

Write equation for the center(-1,0) radius of 6

Ira Lisetskai [31]

Answer:

(x+1)² + y² = 36

Step-by-step explanation:

<u>Equation of a circle:</u>

(x-h)² + (y-k)² = r²

Center: (h,k)

Radius: r

Given a center of (-1,0) and a radius of 6, we have for our equation:

(x-(-1))² + (y-0)² = 6²

(x+1)² + y² = 36

3 0

2 years ago

Look at the figure. How can you prove ∆ABD and ∆ACD are congruent?

Levart [38]

Answer:

Options (C)

Step-by-step explanation:

For the congruence of the triangles ΔADB and ΔADC,

Statements Reasons

1). AB ≅ AC 1). Given

2). AD ≅ AD 2). Reflexive property

3). ∠BAD ≅ ∠CAD 3). Given

4). ΔABD ≅ ΔCAD 4). SAS postulate

Therefore, Options (C) will be the correct option.

7 0

2 years ago

A building 190 feet tall casts a 90 foot long shadow. if a person stands at the end of the shadow and looks up to the top of the

Ivahew [28]

Answer:

About 64.65 degrees

Step-by-step explanation:

$\tan(x) = \frac{190}{90}$

$x = { \tan}^{ - 1} \frac{190}{90} = 64.65$

Make sure your calculator is in degree mode.

5 0

1 year ago