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Paul [167]
3 years ago
13

If you could please help good sir...

Mathematics
2 answers:
Vladimir [108]3 years ago
5 0

Answer:10

Step-by-step explanation:

Misha Larkins [42]3 years ago
4 0
Y=4x+9
Opposite slope to be perpendicular
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In the diagram below, ABC - DEC. What is the value of x?<br> A 5<br> B. 3<br> C. 6<br> D. 4<br>​
Anastaziya [24]

Answer:

C

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

\frac{BC}{EC} = \frac{AC}{DC}, substituting values

\frac{21}{7} = \frac{24-x}{x} ( cross- multiply )

21x = 7(24 - x) ← distribute

21x = 168 - 7x ( add 7x to both sides )

28x = 168 ( divide both sides by 28 )

x = 6 → C

7 0
3 years ago
Look at the question in the picture pls I need help
Lena [83]

Step-by-step explanation:

Let the painting's width be w inches and length be l inches.

w + 6 = 2l

w = 2l - 6 --(1)

2w + 2l = 84 --(2)

sub (1) into (2):

2(2l - 6) + 2l = 84

2l - 6 + l = 42

3l = 48

l = 16

when l = 16, w = 2(16) - 6 = 26

area of painting = lw = 16 x 26 = 416square inches

Therefore, only statements 1, 3 and 5 are true

Topic: Algebraic equations + Simultaneous linear equations

If you would like to venture further into mathematics, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

8 0
3 years ago
4. What key features of a quadratic graph can be identified and how are the graphs affected when the constants or coefficients a
natka813 [3]
Standard quadratic equation .. y = a x^2 + b x + c 
<span>parabola 'a' not equal to zero </span>
<span>a<0 parabola opens downward </span>
<span>a>0 parabola opens upward </span>
<span>when |a| >>0 the parabola is narrower </span>
<span>when |a| is close to zero , the parabola is flatter </span>

<span>when the constant is varied it only effects the vertical position of the parabola , the shape remains the same</span>
6 0
3 years ago
Read 2 more answers
I already know dis but what I want to know if u do. what is the difference between a prime number and a composite ​
Lynna [10]

Answer:

The opposite of prime numbers are composite numbers. A composite number is a positive  natural l number that has at least one positive divisor other than one or itself. The number 1 is not a prime number by definition - it has only one divisor.

Step-by-step explanation:

5 0
3 years ago
Can someone guide me through this progress?
IgorC [24]
To find the mean you add all the numbers and divide by how many numbers there are so in this case 2+3+4+4+6= 19, there are 5 numbers so divide 19/5
7 0
3 years ago
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