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2 years ago

4 Write 5 as a decimal number. 5

Mathematics

1 answer:

kari74 [83]2 years ago

4 0

Answer:

0.05

Step-by-step explanation:

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Please help me solve question 5.) with the letters a) & b)

tatyana61 [14]

Answer:

Step-by-step explanation:

5.(a)

x²+6x-15=0

$x=\frac{-6\pm\sqrt{36+4*15}}{2*1}\\x=\frac{-6\pm\sqrt{36+60} }{2}\\x=\frac{-6\pm\sqrt{96} }{2}\\x=\frac{-6\pm4\sqrt{6} }{2}\\x=-3\pm2\sqrt{6}$

(b)

4x²-8x-1=0

$x=\frac{8\pm\sqrt{64+4*4}}{2*4}\\x=\frac{8\pm\sqrt{80}}{8}\\x=\frac{8\pm 4\sqrt{5} }{8}\\x=\frac{2\pm\sqrt{5}}{2}$

7 0

2 years ago

The difference between two numbers is 8 .if 2 is added to the bigger number the result will be three times the small number. Fin

Verdich [7]

X - y = 8
x + 2 = 3y.....x = 3y - 2

3y - 2 - y = 8
2y = 10
y = 5

x - y = 8
x - 5 = 8
x = 8 + 5
x = 13

so x = 13 and y = 5

5 0

3 years ago

I need help with this

Snezhnost [94]

Answer:

$y = - \frac{1}{2} x + 4$

Step-by-step explanation:

Let us consider two points through which the line passes through

$(x_1 , y _ 1 ) = ( 0 , 4 ) \ and \ (x_ 2 , y _ 2 ) = ( 4, 2 )$

Step 1 : Find slope of the line

$Slope, m_1 = \frac{rise}{run} \\\\That \ is \ m_1 \ = \frac{y_2 - y _ 1}{x_2 - x_1}$

$= \frac{2 - 4}{4-0} \\\\=-\frac{2}{4}\\\\= - \frac{1}{2}$

Step 2 : Find equation of the line.

$(y - y _ 1) = m_ 1 (x - x_1)\\\\( y - 4) = - \frac{1}{2}(x - 0)\\\\y = -\frac{1}{2}x + 4$

5 0

3 years ago

I need help hurry

Novay_Z [31]

Answer:

Step-by-step explanation:

a = 7

c = -3

6 0

2 years ago

Which term of series1 +4+7+10+...is43

mariarad [96]

Answer:

15th term

Step-by-step explanation:

6 0

3 years ago