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yuradex [85]
3 years ago
14

Which expression is equivalent to 2.2-2.5?​

Mathematics
1 answer:
diamong [38]3 years ago
7 0

Answer:2.2 + (-2.5)

Step-by-step explanation:

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The distance between Joshua's home and school is 800 m. Joshua takes 5 min to walk
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Answer:

= 0.38 m/s

Step-by-step explanation:

▪Total distance = 800 m

5 min = 100 m

▪Remaining distance = 800 - 100 = 700 m

20 min = 700 m

▪Total time taken = 20 + 10 + 5 = 35 min

If 1 min = 60 sec

What about 35 min = ?

= 35 x 60

= 2100 sec

▪Average speed = TD ÷ TT

= 800 ÷ 2100

= 0.38 m/s

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Someone help.me find angle C and D<br>also this is in CIRCLE THEOREM lesson​
Artyom0805 [142]

Step-by-step explanation:

Opposite angles in a cyclic quadrilateral are supplementary.

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8 0
3 years ago
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Which expression is equivalent to StartFraction b Superscript negative 2 Baseline Over a b Superscript negative 3 Baseline EndFr
nignag [31]

Answer:

  • \frac{b^{-2}}{ab^{-3}}=\frac{b}{a}

Step-by-step explanation:

Writing the description in algebraic translation

\frac{b^{-2}}{ab^{-3}}

so we have to find the expression which will be equal to \frac{b^{-2}}{ab^{-3}}.

Considering the expression

\frac{b^{-2}}{ab^{-3}}

\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}=x^{a-b}

\frac{b^{-2}}{b^{-3}}=b^{-2-\left(-3\right)}

so the expression becomes

=\frac{b^{-2-\left(-3\right)}}{a}            ∵ \frac{b^{-2}}{b^{-3}}=b^{-2-\left(-3\right)}

\mathrm{Subtract\:the\:numbers:}\:-2-\left(-3\right)=1

=\frac{b}{a}

Therefore,

                    \frac{b^{-2}}{ab^{-3}}=\frac{b}{a}

7 0
4 years ago
Read 2 more answers
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