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ValentinkaMS [17]
3 years ago
15

2 questions...both need answers

Mathematics
1 answer:
ser-zykov [4K]3 years ago
5 0

Answer:

Step-by-step explanation:

1.

L=4W-1

P=2(L+W)=118, using L from above makes this

2(4W-1+W)=118,

2(5W-1)=118

5W-1=59

5W=60

W=12, and since L=4W-1

L=4(12)-1

L=47

So the length is 47ft and the width is 12ft

2.

A=7G+5

7G=A-5

G=(A-5)/7, and we are told A+G=45, using G=(A-5)/7 gives us

A+(A-5)/7=45

(7A+A-5)/7=45

(8A-5)/7=45

8A-5=315

8A=320

A=40

So Ally scored 40 points.

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A four-sided shape has four congruent angles and sides. Which quadrilateral could it be? A. quadrilateral B. trapezoid C. square
Gnoma [55]

Answer:

C. square

Step-by-step explanation:

<u>Congruent</u> means "the same" (having the same shape and size).

Any four-sided, 2-dimensional shape with straight sides is called a <u>quadrilateral</u>.

There are 6 special types of quadrilaterals:

<u>Rectangle</u>

  • Opposite sides are parallel and equal in length
  • All interior angles are 90°

<u>Square</u>

  • All sides are equal in length
  • All interior angles are 90°

<u>Rhombus</u>

  • All sides are equal in length
  • Opposite sides are parallel
  • Opposite angles are equal

<u>Parallelogram</u>

  • Opposite sides parallel and equal in length
  • Opposite angles are equal

<u>Trapezoid</u>

  • One pair of opposite parallel sides

<u>Isosceles Trapezoid</u>

  • One pair of opposite parallel sides
  • One pair of non-parallel sides equal in length
  • Two pairs of equal base angles

<u>Kite</u>

  • Two pairs of adjacent sides equal in length
  • The angles included between the sides of differing lengths are equal

<u>Conclusion</u>

A four-sided shape that has four congruent angles and sides is a SQUARE.

7 0
3 years ago
Read 2 more answers
On a given day, the coldest surface temperature on the moon, -280°F, is 53.6°F colder than twice the coldest surface temperature
vovikov84 [41]

-113.2 °F

Step-by-step explanation:

Well assign the coldest place on earth on the day as having <em>x</em> temperature

Therefore based on the statement;

2x – 53.6 = -280

2x = -280 + 53.6

2x = - 226.4

X = -113.2

Learn More:

brainly.com/question/3726347

brainly.com/question/11418599

#LearnWithBrainly

8 0
3 years ago
please help me with my question due tomorrow morning I will like and mark as brainliest for the first correct answer please​
galina1969 [7]

Answer:

p = (2k + 1)i + j

q = 25i + (k + 4)j

p . q = 11

Find the dot product of p and q

(2k + 1)(25) + (k + 4) = 11

50k + 25 + k + 4 = 11

51k = -18

k = - 18/51 = –6/17.✅

b) p.q = |p||q|cos∅

p= (2k + 1)i + j = [2(-6/17) + 1)i + j ]= 5/17i + j

|p| = √ (5/17)² + 1²

|p| = √314/ 17 ( The square root doesn't cover the 17) = 1.0424

q = 25i + (k + 4)j = 25i + ( -6/17 + 4)j

q = 25i + 62/17 j

|q| = √ 25² + (62/17)²

= 25.2646

Now applying them to the formula above

We already have p.q = 11 from the question.

11 = (1.0424)(25.2646)Cos∅

11 = 26.3358Cos∅

Cos∅ = 11/26.3358

Cos∅ = 0.4177

∅ = 65.31°.

This should be it.

Hope it helps

6 0
3 years ago
Fill in the blank please.
lys-0071 [83]
GI (make sure you put a line horizontal across the GI to label that you are mentioning a line segment)
8 0
4 years ago
In order to make statistical inferences when testing a population proportion p, which of the following conditions verify that in
sweet [91]

Answer:

a, b and c.

Step-by-step explanation:

The statistical inference may be defined as the process of using the data analysis to infer the properties of an underlying distribution for a probability.

In the context, for testing the population proportion p, the following conditions are used to verify the inference procedures so as to make the statistical inferences :

-- data that are collected by a random assignment or by a random sample.

-- sample size should be less than 10% of population size.

-- The $n \ p_0 \geq 10$ and the $n(1-p_0) \geq 10$ for the sample size $n$ as well as for the  hypothesis proportion, $p_0.$

4 0
3 years ago
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