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Bingel [31]
3 years ago
15

WILL GIVE BRAINLIST SOON AS I CAN SOMEBODY PLEASE HELP ME ​

Mathematics
1 answer:
fgiga [73]3 years ago
5 0

Answer:

A= 75.06 Sq Cm

Step-by-step explanation:

Please refer to the picture attached with this.

In ΔABD

AB = 8.5 , AD = 6 and say BD = x

Applying Pythagoras theorem in this triangle

Pythagoras theorem says

a^2+b^2=c^{2}

where c is the side opposite to the right angle, and b and a are the other two sides of the right angled triangle.

x^2+6^2=8.5^{2}

x^2=72.25-36

x^2=36.25

x=6.02

Hence side a = x +19

a = 6.02+19

a = 25.02

Now we apply the formula for area of a triangle which is given as

A=\frac{1}{2}\times b \times h

Where b is the base , here we have base as a = 25.02

h is the height , here h = 6

Putting these values in Formula we get

A=\frac{1}{2}\times 25.02 \times 6

A= 25.02 \times 3

A=75.06

Hence Area of the triangle is 75.06 sq cm

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Which of the following expressions is equivalent to 9x2 - 4 ?
navik [9.2K]

If your teacher wants you to factor, then use the difference of squares rule

9x^2 - 4

(3x)^2 - 2^2

(3x-2)(3x+2)

3 0
3 years ago
1. In Suri's coin purse she has 6 dimes and
ollegr [7]

Answer:

The ratios are not equal

Step-by-step explanation:

Let

x ----> the number of dimes

y ----> the number of quarters

we know that

<em> Suri's coin purse</em>

x=6, y=4

The ratio of dimes  to quarters is

\frac{x}{y} =\frac{6}{4}

<em> Martha's coin purse</em>

x=5, y=3

The ratio of dimes  to quarters is

\frac{x}{y} =\frac{5}{3}

Compare the ratios

\frac{6}{4}=\frac{5}{3}\\6(3)=4(5)\\18\neq 20

therefore

The ratios are not equal

3 0
3 years ago
Alia and Huda share some sweets in the ratio 7:3. Alia gives 3 sweets to Huda and
Nuetrik [128]

Answer:

Alia=28

Huda=12

Step-by-step explanation:

Let the constant of proportionality be x

Hence, no. of sweets Alia had initially = 7x

No. of sweets Huda had initially = 3x

No. of sweets Alia has now= 7x-3

No. of sweets Huda has now= 3x+3

We know that, the ratio of the no. of sweets Alia has now to no. of sweets Huda has now = 5:3

Hence,

(7x-3) : (3x+3)=5:3\\By\ equalizing\ the\ ratios,\ we\ get,\\ 3(7x-3)=5(3x+3)\\21x-9=15x+15\\21x-15x=15+9\\6x=24\\x=4

As we now got the constant of proportionality to be 4,

No. of sweets Alia had initially = 7*4=28

No. of sweets Huda had initially= 3*4=12

5 0
3 years ago
Read 2 more answers
Jill’s bowling scores are approximately normally distributed with mean 170 and standard deviation 20, while Jack’s scores are ap
Allushta [10]

Answer:

0.3446,0.2119

Step-by-step explanation:

Given that Jill’s bowling scores are approximately normally distributed with mean 170 and standard deviation 20, while Jack’s scores are approximately normally distributed with mean 160 and standard deviation 15.

If X represents Jill scores and Y Jack scores we have

X is N(170,20) and Y is N(160,15)

since x and y are independent we have the difference

X-Y is N(170-16,\sqrt{20^2+15^2} )\\=N(10, 25)

a) Prob that Jack’s score is higher

= P(-x+y>0)

=P(Z

b) X+Y is Normal with (330, 25)

P(X+Y>350) = P(Z>\frac{350-330}{25} )\\=P(Z>0.8)\\\\= =0.2119

7 0
3 years ago
95 CM = how many metters
sergey [27]
Your answer would be 0.95 meters. hope that helped
8 0
3 years ago
Read 2 more answers
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