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4 years ago

How do i solve a triangles area

Mathematics

1 answer:

shusha [124]4 years ago

6 0

Answer:

Area = 1/2 Base x height

Step-by-step explanation:

To find the area of a triangle, multiply the base of the height and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into two triangles.

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Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2700 grams and a standard deviation of 900

rosijanka [135]

Answer:

The 33 week gestation period baby has a zscore of -0.47.

The 41 week gestation period baby has a zscore of -0.94.

The 41 week gestation period baby weighs less relative to the gestation period.

Step-by-step explanation:

Normal model problems can be solved by the zscore formula.

On a normaly distributed set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a value X is given by:

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

The zscore represents how many standard deviations the value of X is above or below the mean $\mu$ . This means that the baby with the lowest Zscore is the one who weighs relatively less to the gestation period.

33 week gestation period baby:

Babies born after a gestation period of 32 to 35 weeks have a mean weight of 2700 grams and a standard deviation of 900 grams, so $\mu = 2700, \sigma = 900$ .

A 33-week gestation period baby weighs 2275 grams. So $X = 2275$ .

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

$Z = \frac{2275 - 2700}{900}$

$Z = -0.47$

41 week gestation period baby:

Babies born after a gestation period of 40 weeks have a mean weight of 3200 grams and a standard deviation of 450 grams, so $\mu = 3200, \sigma = 450$

A 41-week gestation period baby weighs 2775 grams, so $X = 2775$ .

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

$Z = \frac{2775 - 3200}{450}$

$Z = -0.94$

The 41 week gestation period baby weighs less relative to the gestation period, since he has a lower zscore.

8 0

3 years ago

Please help −14x>−3 it must be simplified

umka2103 [35]

➣ Assignment: $\bold{Solve \ Equation: \ -14x>-3}$

↔↔↔↔↔↔↔↔

➣ Answer: $\boxed{\bold{x$

↔↔↔↔↔↔↔↔

Explanation: ↓↓↓↓↓

↔↔↔↔↔↔↔↔

➤ [ Step One ] Multiply Both Sides By -1 (Reverse Inequality)

$\bold{\left(-14x\right)\left(-1\right)$

➤ [ Step Two ] Simplify

$\bold{14x$

➤ [ Step Three ] Divide Both Sides By 14

$\bold{\frac{14x}{14}$

➤ [ Step Four ] Simplify

$\bold{x$

↔↔↔↔↔↔↔↔

$\bold{\rightarrow Mordancy \leftarrow}$

6 0

3 years ago

Camille and Hiroki have decided to start walking for exercise. Camille is going to walk 777 miles the first day and 333 miles ea

labwork [276]

Answer: 7 days

Step-by-step explanation:

Camille and Hiroki have decided to start walking for exercise. Camille is going to walk 7 miles the first day and 3 miles each day after that. Hiroki is too busy to walk on the first 2 days, so he decides to walk 5 miles each day until he has walked the same number of miles as Camille.

Camille will walk x days, so: 7 + 3(x-1) miles

Hiroki will walk the same miles, but 2 days less so: 5(x-2)

same amount of miles:

5(x-2) = 7 + 3(x-1)

5x - 10 = 7 + 3x - 3

5x - 3x = 10 + 7 - 3

2x = 14

x = 7

If Camille and Hiroki will have walked the same number of miles, how many days will Camille have walked?

Camille will have walked 7 days.

6 0

4 years ago

There are 8students who have3/4 of a cake they want to share. How much of the cake will each student get if they split it evenly

emmainna [20.7K]

Hey!!

here is your answer >>>>

If there are 8 students, and who have 3/4 the cake to share equally, we will have to divide 3/4 with 8.

which is( 3/4)/(8)

Now, we will have to take a reciprocal, we get,

(3/4)(1/8)

which is 3/32

which is
Each student gets, 3/32 of the cake!

Hope my answer helps!

7 0

3 years ago

How many units long is a line segment whose endpoints have coordinates (-3,7) and (2,-5)?

Ilia_Sergeevich [38]

Answer:

D = 13 units

Step-by-step explanation:

<u><em>Using Distance Formula to find the length.</em></u>

Distance Formula = $\sqrt{(x2-x1)^2+(y2-y1)^2}$