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2 years ago

Work out

Mathematics

1 answer:

KatRina [158]2 years ago

6 0

Answer:

$- 1.02 \times 10 {}^{2}$

Step by step:

Use bidmass to work out the brackets

(2×108) = 216

(3×106) =318

216-318=-102

Then put into standard form.

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HELP I WILL MARK BRAINLIEST

Shkiper50 [21]

Answer:

308

Step-by-step explanation:

22 x 15.4 = 338.8

338.8 / 1.1 = 308

5 0

2 years ago

A circle has a radius of 10 cm what is the circumference

patriot [66]

Answer:

62.8 cm

Step-by-step explanation:

The circumference of a circle can be found by

C = 2 * pi *r where r is the radius

C = 2*pi* 10

C = 20 pi

Letting pi be approximated by 3.14

C = 20 *3.14

C =62.8 cm

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3 years ago

7/6 times x=140 what does x=

Alex777 [14]

Answer:

x = 120

Step-by-step explanation:

just do the reciprocal

140/ 7/6 to get 120 as x

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3 years ago

Jessica is returning home from a trip. The function d(t)=458-60t models the distance, in miles, that Jessica is from her house t

S_A_V [24]

Answer: D. 453 miles .

Step-by-step explanation:

Given: The function $d(t)=458-60t$ models the distance, in miles, that Jessica is from her house <em>t </em>hours after she began returning home.

At t = 5 minutes = $\dfrac{5}{60}$ hour [1 hour = 60 minutes],

Distance covered by Jessica in 5 minutes = $d(\dfrac{5}{60})=458-60(\dfrac{5}{60})$

$=458-5=453\ miles$

Jessica is 453 miles from her home after 5 minutes she began returning home.

Hence, the correct option is D. 453 miles .

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3 years ago

Acreage varies directly with the production in bushels of wheat produced.

kvv77 [185]

Answer:

750 bushels

Step-by-step explanation: 20/300=50/b b=bushels

cross multiply then you get 20b=15000

next you divide 20 by 15000 and you get 750 bushels!

i had the same question just now and figured it out! hope this helped you!

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3 years ago