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3 years ago

Which table shows equivalent times in minutes and seconds

Mathematics

1 answer:

olchik [2.2K]3 years ago

8 0

There’s no image shown can u attach one

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Please help me on this , Thank you

aliina [53]

I think it is b I think I’m right

3 0

3 years ago

Help me please!! This is timed and I’m stuck

zhuklara [117]

Let's solve

$\\ \sf\longmapsto 2x^2+7x-15=0$

$\\ \sf\longmapsto x=\dfrac{-7\pm\sqrt{7^2-4(2)(-15)}}{2(2)}$

$\\ \sf\longmapsto x=\dfrac{-7\pm\sqrt{169}}{4}$

$\\ \sf\longmapsto x=\dfrac{-7\pm13}{4}$

$\\ \sf\longmapsto x=\dfrac{-7+13}{4}\:or \:\dfrac{-7-13}{4}$

$\\ \sf\longmapsto x=\dfrac{6}{4}\:or\:\dfrac{-20}{4}$

$\\ \sf\longmapsto x=\dfrac{3}{2}\:or -5$

Subtract

$\\ \sf\longmapsto 3/2-(-5)=3/2+5=13/2$

Option B

6 0

3 years ago

Read 2 more answers

How do I write three different fractions that simplify to 1/4

My name is Ann [436]

2/8
4/12
6/24

they can all be simplified to 1/4

8 0

3 years ago

2x + 4y =450 4x + 2y = 420

masya89 [10]

2x+4y=450

2x=450-4y

x=450-4y÷2----- equation 1

4x+2y=420

4x=420-2y

x=420-2y÷4----- equation 2

putting the value of x in equation 1

x=450-4y÷2

420-2y÷4=450-4y÷2

2(420-2y)=4(450-4y)

840-4y=1800-16y

840-1800=-16y-4y

-960= -12y

y=80

putting the value of y in equation1

2x+4y=450

2x+4×80=450

2x+320=450

2x=450-320

2x=130

x=130÷2

x=65

<h2> the value of x is 65 and y is 80</h2>

7 0

3 years ago

Una tirolina de 26 m de largo está atada entre dos postes que están separados por 24 m. Si Manuela monta la tirolina desde el pr

maks197457 [2]

Answer:

The difference between the heights of the poles is 10m

Step-by-step explanation:

The distance between poles is 24 m

The length of the cable is 26m

You first use the Pythagoras' theorem to calculate the vertical distance between the end of one pole and the end of the other one.

$c_2=\sqrt{h^2-c_1^2}\\\\c_2=\sqrt{(26m)^2-(24m)^2}=\sqrt{100}m=10m$

The difference between the heights of the poles is 10m

The higher pole has height of 50m

Then, the lower pole has a height of 50m - 10m = 40m

4 0

3 years ago